# China Sourcing Agent

> Engineer-led China sourcing agent specializing in electronics, IoT modules, and PCB assembly. We help Western hardware companies source from China without surprises.

Contact: hello@china-sourcing-agents.com | WhatsApp: +86 176 0803 0983 | Hours: Mon–Sat, 09:00–19:00 CST (UTC+8)

## Key Pages

- [Home](https://china-sourcing-agents.com/): Overview of services and value proposition
- [How It Works](https://china-sourcing-agents.com/how-it-works/): End-to-end sourcing process (10 steps)
- [About](https://china-sourcing-agents.com/about/): Founder background, 7+ years hardware engineering
- [Pricing](https://china-sourcing-agents.com/pricing/): Commission-based (5-8%), project-based, and retainer models
- [Contact / RFQ](https://china-sourcing-agents.com/contact/): Submit a sourcing inquiry
- [FAQ](https://china-sourcing-agents.com/faq/): Common questions about China sourcing

## Services

- [China Sourcing & Supplier Matching](https://china-sourcing-agents.com/services/sourcing/): Find verified Chinese suppliers for your specific product. We search 1688, Alibaba, and our direct factory network — then filter down to 3–5 candidates worth talking to.
- [China Factory Audit & Verification](https://china-sourcing-agents.com/services/audit/): On-site verification: legitimate factory, not trader. We check licenses, production equipment, quality systems, and worker capacity before you wire a deposit.
- [Quality Inspection in China](https://china-sourcing-agents.com/services/inspection/): Pre-production, during-production, pre-shipment QC in China. Three checkpoints that catch problems before they become containers of defects.
- [Private Label & OEM in China](https://china-sourcing-agents.com/services/private-label/): Your brand, your packaging, your specs — manufactured in China. We manage mold development, packaging design coordination, logo application, and regulatory marking — so you get a finished product, not just components.
- [China Logistics & Customs Coordination](https://china-sourcing-agents.com/services/logistics/): Door-to-door from China to your warehouse. We coordinate freight forwarders, prepare China export documents, and make sure your goods don't sit in customs longer than necessary.

## Industries

- [Automotive Electronics Sourcing China](https://china-sourcing-agents.com/industries/automotive-electronics/): Source automotive-grade ECUs, ADAS sensors, EV components, and instrument clusters from China — with IATF 16949 supplier verification, AEC-Q qualification checks, and PPAP support.
- [Consumer Electronics Sourcing China](https://china-sourcing-agents.com/industries/consumer-electronics/): Source consumer electronics from China — Bluetooth speakers, TWS earphones, smart watches, portable chargers — with zero tolerance for certification failures.
- [Industrial IoT Hardware Sourcing China](https://china-sourcing-agents.com/industries/industrial-iot/): Source IIoT hardware from China — industrial gateways, DIN rail switches, Modbus converters, industrial sensors — with verified compliance documentation and extended-temperature component validation.
- [IoT Module Sourcing & Supplier China](https://china-sourcing-agents.com/industries/iot-modules/): Source IoT modules from China — LoRa gateways, BLE modules, WiFi SoCs, sensor nodes. We know the difference between a genuine module and a counterfeit reference design.
- [PCB Assembly Sourcing China — SMT Manufacturing](https://china-sourcing-agents.com/industries/pcb-assembly/): PCB assembly sourcing in China — Gerber to assembled boards. PCBA factories in Shenzhen and Dongguan for prototypes, NPI runs, and volume production with engineering oversight.
- [Power Electronics & Charging Sourcing China](https://china-sourcing-agents.com/industries/power-electronics/): Source GaN chargers, power banks, BMS units, and EV accessories from China — with full certification stack management for US, EU, UK, Japan, and Korea markets.
- [Smart Home Device Sourcing China](https://china-sourcing-agents.com/industries/smart-home/): Source smart home devices from China — Zigbee, Matter, and WiFi products for consumer and professional markets. We navigate certifications so your products work in the EU and US.
- [Wearable & Health Tech Sourcing China](https://china-sourcing-agents.com/industries/wearables/): Source wearables and health tech from China — smart watches, fitness trackers, TWS earbuds with biometric sensors — with verified battery certifications and FPC expertise.

## Case Studies

- [China Private Label IoT Sensor: From Generic to 4.6★ on Amazon](https://china-sourcing-agents.com/cases/amazon-seller-iot-sensor/): Launched in 90 days. 4.6★ average rating after 200 reviews. 34% margin vs 12% on prior generic.
- [Industrial IoT Gateway Sourcing China: EU Integrator Cuts Hong Kong Middleman, Saves 22%](https://china-sourcing-agents.com/cases/eu-industrial-iot-gateway/): Direct factory relationship established. 22% cost reduction vs prior Hong Kong distributor. CE certification verified with lab reports from accredited body.
- [Bluetooth Speaker Sourcing China: EU Startup Crowdfunding to 5,000 Units](https://china-sourcing-agents.com/cases/eu-startup-bluetooth-speaker/): Delivered on time, 0.4% defect rate, 18% margin improvement vs prior agent.
- [LoRa Gateway Sourcing China: Japanese Distributor Cuts Costs by 22%](https://china-sourcing-agents.com/cases/jp-distributor-lora-gateway/): Eliminated HK middleman markup. 22% lower unit cost. JATE/TELEC certified units delivered in 11 weeks.
- [Smartwatch Sourcing China: US Fitness Startup from Prototype to 3,000-Unit Certified Run](https://china-sourcing-agents.com/cases/us-startup-smart-watch/): First certified production run delivered on schedule. 0.6% defect rate. FCC + CE dual certification completed in parallel, saving 6 weeks vs sequential approach.

## Guides

- [Importing Electronics from China to the EU: CE Marking, Customs, and VAT in 2026](https://china-sourcing-agents.com/guides/import-electronics-china-eu/): A practical guide to importing electronics from China to the EU — CE marking under RED, customs duty rates, VAT on import, and CBAM considerations.
- [Importing Electronics from China to the UK: UKCA, Customs Duty, and VAT in 2026](https://china-sourcing-agents.com/guides/import-electronics-china-uk/): A practical guide to importing electronics from China to the UK — UKCA marking, UK Global Tariff rates, import VAT, and customs clearance post-Brexit.
- [Importing Electronics from China to the USA: Tariffs, Customs, and Compliance in 2026](https://china-sourcing-agents.com/guides/import-electronics-china-usa/): A practical guide to importing electronics from China to the US — Section 301 tariffs, FCC requirements, customs clearance, and landed cost calculation.
- [China Electronics Industry in 2026: Key Facts for Importers and Buyers](https://china-sourcing-agents.com/guides/china-electronics-industry-overview/): An overview of China's electronics manufacturing sector — scale, geography, product categories, and what importers need to know about the supply chain in 2026.
- [Multi-Market Certification for Electronics: FCC, CE, UKCA, and PSE in Parallel](https://china-sourcing-agents.com/guides/multi-market-certification-electronics/): Certify electronics for the US, EU, UK, and Japan simultaneously — which tests transfer, what runs in parallel, realistic timelines from China.
- [OEM vs ODM Electronics in China: A Decision Framework for Hardware Buyers](https://china-sourcing-agents.com/guides/oem-vs-odm-electronics-china/): OEM and ODM mean different things for IoT sensors, gadgets, and industrial hardware. A product-category decision framework with real cost trade-offs.
- [Top Chinese Electronics Manufacturers for OEM and Private Label (Not the Consumer Brand List)](https://china-sourcing-agents.com/guides/top-chinese-electronics-manufacturers/): A buyer's guide to the actual Chinese electronics manufacturers that make products for Western brands — not the consumer-facing companies you already know.
- [China Electronics Market Cities: Where to Source by Product Category](https://china-sourcing-agents.com/guides/china-electronics-market-cities/): A practical guide to China's electronics manufacturing cities — Shenzhen, Dongguan, Yiwu, Suzhou, and when to source from each based on your product category.
- [Electronics Quality Control in China: An Engineer's Approach to Catching What Checklists Miss](https://china-sourcing-agents.com/guides/electronics-quality-control-china/): QC for electronics goes beyond AQL sampling — component substitution, counterfeit parts, and firmware integrity require engineering-level review.
- [GaN Charger OEM China: Sourcing Guide](https://china-sourcing-agents.com/guides/gan-charger-oem-china/): How to source GaN chargers from China — UL 62368-1 certification, GaN IC authenticity, DOE Level VI efficiency, and multi-market CE/UKCA/PSE compliance.
- [Hardware Startup Manufacturing in China: From First Sample to Mass Production](https://china-sourcing-agents.com/guides/hardware-startup-china-manufacturing/): What happens after crowdfunding succeeds — a sourcing agent's breakdown of every production milestone from prototype to 5,000+ units.
- [China Electronics Market Websites: Alibaba, 1688, Global Sources, DHgate — Which to Use](https://china-sourcing-agents.com/guides/china-electronics-market-websites/): A practical comparison of the main China electronics sourcing platforms — what each is actually for, who uses them, and how to avoid the common mistakes on each.
- [Industrial IoT Sourcing from China](https://china-sourcing-agents.com/guides/industrial-iot-hardware-sourcing/): How to source IIoT hardware from China — industrial gateways, DIN rail devices, Modbus converters. Covers IEC compliance and -40°C component validation.
- [Shenzhen Electronics Market Guide: Huaqiangbei, Bao'an & Longgang](https://china-sourcing-agents.com/guides/shenzhen-electronics-market-guide/): A practical guide to Shenzhen's electronics districts for hardware buyers: where to source components, find factories, and evaluate suppliers in Huaqiangbei, Bao'an, and Longgang.
- [Wearable Device Manufacturing in China](https://china-sourcing-agents.com/guides/wearable-manufacturing-china/): How to manufacture wearables in China — factory selection, FPC sourcing, battery certification (UN 38.3, IEC 62133-2), and FCC/CE/UKCA compliance.
- [China Electronics Wholesale: MOQ, Pricing, and How Not to Get Burned](https://china-sourcing-agents.com/guides/china-electronics-wholesale-guide/): A practical guide to buying electronics wholesale from China — MOQ negotiation, pricing structures, payment terms, and the common traps that cost buyers thousands.
- [China Electronics Manufacturing Companies: How to Find, Vet, and Work With the Right One](https://china-sourcing-agents.com/guides/china-electronics-manufacturing-companies/): A practical guide to finding legitimate China electronics manufacturers — not traders — for hardware buyers and electronics importers.
- [PCB Assembly in China: Buyer's Guide](https://china-sourcing-agents.com/guides/pcb-assembly-china/): How to source PCB assembly from China — choosing factories, reading Gerbers, understanding IPC standards, and running quality inspection.
- [Alibaba vs 1688 vs Direct Factory](https://china-sourcing-agents.com/guides/alibaba-vs-1688/): The real differences between Alibaba, 1688, and going direct to factory — pricing, trust, negotiation tactics, and when to use each.
- [How to Verify a Chinese Factory Before Wiring Any Money](https://china-sourcing-agents.com/guides/how-to-verify-chinese-supplier/): Five verification levels that separate real factories from trading companies and scams — with specific checks you can do from your desk before spending a dollar.
- [China Payment Terms: T/T, LC, Escrow](https://china-sourcing-agents.com/guides/china-payment-terms-explained/): A practical breakdown of the payment terms used in China sourcing — Telegraphic Transfer, Letters of Credit, escrow, and when each one protects you.
- [China Factory Audit Checklist](https://china-sourcing-agents.com/guides/factory-audit-checklist/): A practical checklist for auditing Chinese electronics factories. What to check, why it matters, and what disqualifying failures look like.
- [How to Source Electronics from China](https://china-sourcing-agents.com/guides/how-to-source-electronics-from-china/): Factory discovery to production management: the engineer-written guide to sourcing electronics from China for hardware startups and buyers.

## Blog

- [China Electronics Glossary: 80 Terms, Product Names, and Factory Abbreviations](https://china-sourcing-agents.com/blog/china-electronics-product-glossary/): A practical glossary for buyers working with Chinese electronics manufacturers — product categories, factory jargon, certifications, and shipping terms.
- [Amazon FBA Electronics from China: What Sourcing Agents Actually Do for Sellers](https://china-sourcing-agents.com/blog/amazon-fba-electronics-china/): How sourcing agents help Amazon FBA electronics sellers: certifications, MOQ negotiation, inspection, and avoiding the most common mistakes.
- [Private Label Electronics in China: Costs, Timelines, and IP Risks](https://china-sourcing-agents.com/blog/private-label-electronics-china-guide/): How private label electronics from China works: ODM spectrum, tooling costs, realistic timelines, and IP risks most buyers ignore.
- [What a Factory Audit in China Actually Looks Like](https://china-sourcing-agents.com/blog/what-factory-audit-actually-looks-like/): A walk-through of a real China factory audit: what you check, what you learn, what you miss, and when to pay someone else to do it.
- [Shipping from China: Air vs. Sea Freight Cost and Time Comparison](https://china-sourcing-agents.com/blog/china-shipping-air-vs-sea-cost/): Real cost ranges for express, air freight, LCL, and FCL shipping from China — plus the hidden charges most first-time importers don't account for.
- [How to Negotiate with Chinese Factories: Price Tactics That Work](https://china-sourcing-agents.com/blog/negotiating-price-chinese-suppliers/): Tactics for negotiating with Chinese factories: what's actually movable, when to push, and what 'give me a better price' signals to suppliers.
- [Chinese Factory Quality Levels: What You're Actually Paying For](https://china-sourcing-agents.com/blog/chinese-factory-tiers-explained/): How to evaluate Chinese factory quality tiers — what separates export-grade OEM factories from domestic suppliers and trading companies.
- [PCBA Cost Breakdown: Why You're Getting Quotes That Differ by 3×](https://china-sourcing-agents.com/blog/pcb-assembly-cost-breakdown-china/): The actual cost components behind PCBA quotes in China — PCB substrate, component margin, SMT setup, testing — and how to normalize supplier quotes.
- [China Quality Inspection Types Explained: IPC, DUPRO, PSI, and AQL](https://china-sourcing-agents.com/blog/china-quality-inspection-types-aql/): The three stages of China quality inspection: what each catches, how AQL sampling works, when to use full inspection, and common mistakes.
- [IoT Module Certification in China: FCC, CE, and SRRC Explained](https://china-sourcing-agents.com/blog/iot-module-certification-fcc-ce-china/): How FCC, CE RED, and SRRC certification actually work for IoT modules made in China — costs, timelines, and the module shortcut that saves months.
- [China Electronics MOQ: What's Real and What's Negotiable](https://china-sourcing-agents.com/blog/china-electronics-moq-negotiation/): Why Chinese electronics factories quote high MOQs, which costs actually drive them, and what tactics genuinely work for getting lower quantities.
- [China Electronics Tariffs in 2026: What Importers Actually Need to Know](https://china-sourcing-agents.com/blog/china-electronics-tariff-2026-guide/): How US and EU tariffs on China electronics affect your unit economics — with real numbers, what still makes sense to source from China, and what doesn't.
- [How to Read a Chinese Factory Quote: Line by Line](https://china-sourcing-agents.com/blog/how-to-read-chinese-factory-quote/): What the line items on a Chinese supplier quotation actually mean, the red flags that signal a bad quote, and how to compare multiple quotes fairly.
- [Shenzhen Electronics Market Guide: Huaqiangbei, What It's Actually For](https://china-sourcing-agents.com/blog/shenzhen-electronics-market-guide/): What Huaqiangbei is good for, what it's not good for, and how to navigate the market without wasting time or buying counterfeits.
- [Alibaba vs 1688 vs Direct Factory: Which Should You Use?](https://china-sourcing-agents.com/blog/alibaba-vs-1688-vs-direct-factory/): How Alibaba, 1688, and direct factory sourcing actually differ — and which one makes sense depending on where you are in your product journey.

## Technical Reference Wiki

- [77GHz Radar Sensor Modules for ADAS: Sourcing from China](https://china-sourcing-agents.com/wiki/adas-77ghz-radar/): Technical sourcing guide for 76–81 GHz FMCW radar modules used in ADAS. Covers TI AWR/NXP TEF810x chipsets, Chinese OEMs, AEC-Q100 verification, and FCC/ETSI compliance.
- [AQL Sampling Plans: How to Use the Table for Electronics Inspection](https://china-sourcing-agents.com/wiki/aql-sampling/): Practical guide to AQL (Acceptable Quality Level) sampling plans per ANSI/ASQ Z1.4 for electronics pre-shipment inspection. Covers lot size to sample size lookup, defect classification, and how to interpret pass/fail decisions.
- [Automotive Connector Sourcing from China: USCAR-2, Deutsch, TE Alternatives](https://china-sourcing-agents.com/wiki/automotive-connectors/): Automotive connector sourcing guide: USCAR-2 specs, IP67/IP68, Deutsch DT/DTM, TE AMP Superseal, Molex MX150, LV-214, Chinese manufacturers, fake connector detection, PPAP.
- [Automotive Display Modules: Sourcing TFT, IPS, and Cluster Displays from China](https://china-sourcing-agents.com/wiki/automotive-display-modules/): Technical sourcing guide for automotive-grade TFT/IPS/AMOLED display modules. Covers −40°C to 85°C temperature range, CISPR 25, MIPI DSI/LVDS interfaces, and Chinese panel OEMs.
- [High-Current Battery Connectors: XT30, XT60, Anderson, EC Series — China Sourcing Reference](https://china-sourcing-agents.com/wiki/battery-connectors-xt30-xt60/): Technical sourcing reference for high-current battery connectors from China. Covers XT30, XT60, XT90, Anderson Powerpole, EC3/EC5/EC8, Deans, and XT150 with current ratings, contact material specs, and counterfeit detection guidance.
- [Bluetooth 5.x Modules: Technical Sourcing Reference](https://china-sourcing-agents.com/wiki/ble-5-modules/): Sourcing reference for Bluetooth 5.x modules from China. Covers Nordic nRF52840 vs nRF52832 vs EFR32BG22, certified Chinese suppliers, BLE version differences, and FCC/CE grant verification.
- [Lithium Battery Management Systems (BMS): Sourcing Reference](https://china-sourcing-agents.com/wiki/bms-lithium/): Technical sourcing reference for lithium BMS from China. Covers cell balancing, protection parameters, key ICs from Texas Instruments and Chinese vendors, IEC 62133 testing, and UN 38.3 requirements.
- [Board-to-Board Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/board-to-board-connectors/): Board-to-board connector sourcing guide: mezzanine/stacking/coplanar categories, pitch variants (0.4–1.27mm), stacking height, high-speed BTB for USB 3.x/PCIe/MIPI, Chinese alternatives vs OEM originals.
- [BOM Management for Electronics Sourcing](https://china-sourcing-agents.com/wiki/bom-management/): Practical guide to Bill of Materials (BOM) management for electronics sourced from China — covering required columns, MPN vs generic specs, lifecycle management, Chinese distributors, AVL strategy, and preventing unauthorized component substitutions.
- [CAN Bus Transceiver & Interface Modules: Automotive Sourcing Guide](https://china-sourcing-agents.com/wiki/can-bus-modules/): CAN bus modules sourcing from China: ISO 11898, CAN FD (5 Mbps), AEC-Q100 transceivers, OBD-II gateway boards. Part numbers, layout rules, supplier reality check.
- [CE Marking for Electronics: Requirements and Process](https://china-sourcing-agents.com/wiki/ce-marking/): CE marking is mandatory for electronics sold in the EU and covers wireless products under RED, low-voltage equipment under LVD, and all electronics under the EMC Directive. This reference explains the self-declaration process, technical file requirements, and working with Chinese labs.
- [Conformal Coating for Electronics: Types & Sourcing](https://china-sourcing-agents.com/wiki/conformal-coating/): Technical reference for conformal coating selection, application methods, thickness specifications, and quality inspection per IPC-CC-830B — for electronics buyers specifying environmental protection in China-manufactured PCBAs.
- [DC Barrel Power Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/dc-barrel-connectors/): Technical sourcing reference for DC barrel power connectors from China. Covers size standards, current ratings, locking variants, PCB vs cable mount, polarity conventions, and quality failure modes from Chinese suppliers.
- [DFM for PCB: Design for Manufacturability Reference](https://china-sourcing-agents.com/wiki/dfm-guidelines/): PCB design for manufacturability (DFM) rules covering trace spacing, via sizing, component clearances, stencil aperture ratios, fiducials, panelization, and test point layout for electronics manufactured in China.
- [D-Sub Connectors: DB9, DB15, DB25 — China Sourcing Reference](https://china-sourcing-agents.com/wiki/dsub-connectors/): Technical sourcing reference for D-Sub connectors from China. Covers shell sizes, contact types, current ratings, EMC backshell options, and quality issues in Chinese production of DB9, DB15, DB25, and HD-15 variants.
- [ESD Protection in Electronics: PCB Layout & Design](https://china-sourcing-agents.com/wiki/esd-protection/): Technical reference for ESD (electrostatic discharge) protection in electronics — covering HBM/CDM discharge models, TVS diode selection, PCB layout rules, IEC 61000-4-2 system-level compliance, and ESD-safe manufacturing requirements for China sourcing.
- [ESP32 Module Variants: Sourcing Guide for Hardware Engineers](https://china-sourcing-agents.com/wiki/esp32-modules/): Technical comparison of ESP32 module families for China sourcing. Covers ESP32 vs S3 vs C3 vs H2 variants, WROOM vs WROVER, certified suppliers, and common clone module failure modes.
- [EV Onboard Charger (OBC) Modules: Sourcing from China — 3.3kW to 22kW](https://china-sourcing-agents.com/wiki/ev-onboard-charger/): Technical sourcing guide for EV onboard charger modules from China. Covers 3.3–22kW AC/DC conversion, bidirectional V2G OBC, UL 2202/IEC 62477, and Chinese OEM supplier qualification risks.
- [FCC Certification: What Electronics Importers to the US Need to Know](https://china-sourcing-agents.com/wiki/fcc-certification/): FCC certification is mandatory for any electronics product sold in the US that emits radio frequency energy. This reference covers Part 15, SDoC vs TCB certification, modular approval, timelines, and cost ranges for importers.
- [FPC & FFC Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/fpc-ffc-connectors/): FPC vs FFC connector sourcing guide: pitch variants (0.5–1.25mm), ZIF vs LIF, lock types, contact materials, actuation cycle life, camera module connectors, Chinese manufacturers, and failure modes.
- [GaN Charger ICs: Sourcing Reference for Power Electronics OEM](https://china-sourcing-agents.com/wiki/gan-charger-ic/): Technical sourcing reference for GaN charger ICs for OEM power electronics manufacturing in China. Covers Navitas, Innoscience, Power Integrations topologies, USB PD 3.1, BOM cost breakdown, and UL 62368-1 compliance.
- [Gerber Files for PCB Manufacturing: Reference Guide](https://china-sourcing-agents.com/wiki/gerber-files/): Complete reference for PCB fabrication data packages — RS-274X Gerber format, Excellon drill files, ODB++, IPC-2581, fabrication notes, and how to specify board parameters correctly when ordering from a Chinese PCB factory.
- [HDMI & DisplayPort Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/hdmi-displayport-connectors/): Technical sourcing reference for HDMI and DisplayPort connectors from China. Covers HDMI licensing requirements, version bandwidth specs, DisplayPort royalty-free advantage, contact impedance requirements, and failure modes at high-speed signal rates.
- [IATF 16949 Certification for Automotive Component Sourcing from China](https://china-sourcing-agents.com/wiki/iatf-16949/): IATF 16949:2016 explained for buyers: scope limitations, PPAP requirements, how to verify real vs. lapsed certificates, and what Chinese factories actually get certified for.
- [IEC 62133 Battery Safety Certification: What Electronics Manufacturers Need](https://china-sourcing-agents.com/wiki/iec-62133/): IEC 62133-2:2017 is the international safety standard for rechargeable lithium-ion and LiPo cells and packs. This reference explains the CB Scheme, test scope, accredited Chinese labs, costs, and how pack-level certification interacts with cell-level certification.
- [Industrial Ethernet Switches: Sourcing Reference](https://china-sourcing-agents.com/wiki/industrial-ethernet-switches/): Technical sourcing reference for industrial Ethernet switches from China. Covers managed vs unmanaged, DIN rail form factor, IEC 61850-3, IEEE 1588v2 PTP, EMC requirements, and Chinese manufacturer comparison.
- [IPC-A-610: Acceptability of Electronic Assemblies Reference](https://china-sourcing-agents.com/wiki/ipc-a-610/): IPC-A-610 is the global standard for workmanship quality of electronic assemblies. This reference covers all three classes, key defect categories, how to specify IPC-A-610 in purchase orders, cost implications, and how to verify Chinese factories actually understand and apply it.
- [ISO 26262 Functional Safety Certification for Automotive Electronics OEM](https://china-sourcing-agents.com/wiki/iso-26262-functional-safety/): ISO 26262 ASIL levels A–D, HARA, PMHF/SPFM metrics, cost ($50k–500k+), and how to evaluate Chinese supplier claims. Practical guide for automotive electronics buyers.
- [SAE J1939 Protocol Modules and Gateways: Sourcing from China](https://china-sourcing-agents.com/wiki/j1939-protocol/): Technical sourcing guide for SAE J1939 modules, USB analyzers, and CAN-to-MQTT gateways from China. Covers PGN/SPN structure, 250/500kbps variants, connectors, and validation tools.
- [JST Connectors: PH, XH, GH, SH Series — China Sourcing Reference](https://china-sourcing-agents.com/wiki/jst-connectors/): Technical sourcing reference for JST-series connectors from China. Covers PH, XH, GH, and SH pitch and current ratings, JST genuine vs Chinese clone dimensional tolerances, wire gauge compatibility, and intermittent connection failure modes.
- [LiDAR Sensor Modules: Sourcing from China — Spinning, Solid-State, and MEMS](https://china-sourcing-agents.com/wiki/lidar-sensor-modules/): Technical sourcing guide for LiDAR modules from Chinese manufacturers. Covers Hesai, Livox, Robosense specs, 905nm vs 1550nm wavelength, ToF vs FMCW, export controls, and ROS integration.
- [LiPo & Li-ion Battery Cells: China Sourcing Reference](https://china-sourcing-agents.com/wiki/lipo-battery-cells/): Technical sourcing reference for LiPo and Li-ion battery cells from China. Covers energy density, C-rate, cycle life, Chinese cell manufacturers, Grade A vs B distinction, and UN 38.3 transport compliance.
- [LoRa & LoRaWAN Modules: China Sourcing Reference](https://china-sourcing-agents.com/wiki/lora-modules/): Technical reference for sourcing LoRa and LoRaWAN modules from Chinese manufacturers. Covers SX1276 vs SX1262 chipsets, regional frequency bands, certification requirements, and supplier evaluation criteria.
- [M12 Industrial Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/m12-industrial-connectors/): M12 connector coding variants (A through X/T), pin counts, IP67/IP68/IP69K ratings, locking types, Ethernet D/X-coding, Chinese manufacturers, and IP rating validation from China.
- [M8 & M16/M23 Circular Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/m8-m16-circular-connectors/): M8 (IEC 61076-2-104), M16, and M23 circular connector specifications, servo motor and encoder wiring, contact resistance requirements, Chinese manufacturers, and counterfeit detection.
- [Matter Smart Home Protocol: Certification Process and Requirements](https://china-sourcing-agents.com/wiki/matter-certification/): Matter is the CSA's unified smart home protocol running over Wi-Fi and Thread, with mandatory certification for any device marketed as Matter-compatible. This reference covers the full certification process, costs, DAC/PAI/CD components, and the engineering decisions that affect certification timeline.
- [MIPI CSI/DSI Camera & Display FPC Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/mipi-camera-fpc-connectors/): MIPI CSI-2 and DSI FPC connector sourcing guide: pin counts, ZIF types, lane configurations, signal integrity limits, Raspberry Pi CSI ecosystem, non-standard Chinese pinouts, and mass-production sourcing requirements.
- [OBD-II Module Sourcing from China: ELM327 Clones, J2534 Interfaces & Diagnostic Adapters](https://china-sourcing-agents.com/wiki/obd2-modules/): OBD-II module sourcing guide: ELM327 clones vs. genuine, J2534 pass-thru, protocol stack (ISO 15765, J1850, KWP2000), Bluetooth/WiFi variants, volume pricing, and fake detection.
- [PCB Substrate Materials: FR4, Rogers & High-Frequency](https://china-sourcing-agents.com/wiki/pcb-materials/): Technical comparison of PCB laminate materials — FR4, Rogers 4003C/4350B, PTFE, aluminum substrate (MCPCB), and polyimide — with key dielectric properties, cost multipliers, and when to specify each for electronics sourced from China.
- [Pin Headers & Dupont Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/pin-headers-dupont/): Pin header and Dupont connector sourcing guide: 2.54mm/2.0mm/1.27mm pitch, brass vs gold plating, current ratings, through-hole vs SMD, SIL/DIL terminology, and Chinese manufacturers.
- [Pressure Sensors: China Sourcing Reference for Industrial & IoT](https://china-sourcing-agents.com/wiki/pressure-sensors/): Technical sourcing reference for pressure sensors from China. Covers MEMS piezoresistive vs capacitive types, key specifications, Chinese and international manufacturers, IP ratings, and IEC 61298 accuracy testing.
- [REACH SVHC Compliance: Supply Chain Requirements for EU Electronics](https://china-sourcing-agents.com/wiki/reach-compliance/): REACH (EC 1907/2006) requires electronics importers to track and disclose Substances of Very High Concern (SVHC) in their products. This reference covers Article 33 obligations, the SCIP database, how to collect valid declarations, and chemical testing options.
- [Reflow Soldering Profiles: SAC305, Lead-Free & Leaded](https://china-sourcing-agents.com/wiki/reflow-soldering/): Technical reference for reflow soldering thermal profiles covering SAC305 lead-free and Sn63Pb37 leaded processes, zone temperatures, ramp rates, and J-STD-020 moisture sensitivity compliance for electronics manufactured in China.
- [RF Connectors: SMA, MMCX, U.FL/IPEX — China Sourcing Reference](https://china-sourcing-agents.com/wiki/rf-connectors/): Technical sourcing reference for RF connectors from China. Covers SMA, MMCX, U.FL/IPEX, BNC, N-type, and MCX families with frequency ranges, VSWR specs, plating quality, and common failure modes from Chinese suppliers.
- [RJ45 Ethernet Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/rj45-ethernet-connectors/): Technical sourcing reference for RJ45 Ethernet connectors from China. Covers Cat5e/Cat6/Cat6A jack requirements, integrated magnetics quality, PoE contact ratings, industrial IP67 variants, and failure modes from Chinese manufacturers.
- [RoHS 2 Compliance: Electronics Restricted Substances Reference](https://china-sourcing-agents.com/wiki/rohs-compliance/): RoHS 2 (EU Directive 2011/65/EU) restricts 10 hazardous substances in electronics sold in the EU. This reference covers all restricted substances, concentration limits, exemptions, how to get valid supplier declarations, and testing options.
- [SD & microSD Card Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/sd-microsd-connectors/): SD and microSD connector sourcing guide: form factors, push-push vs push-pull actuation, mating cycle life, SIM/SD combo connectors, SMD footprint requirements, Chinese manufacturers, and eject force failure modes.
- [SMT PCB Assembly: Technical Reference for Buyers](https://china-sourcing-agents.com/wiki/smt-process/): Complete technical reference for SMT (Surface Mount Technology) assembly, covering solder paste printing, pick-and-place, reflow, and inspection stages. Essential reading before auditing or qualifying a Chinese PCBA factory.
- [TELEC/MIC Type Approval: Japan Radio Law Certification](https://china-sourcing-agents.com/wiki/telec-japan/): Japan's Radio Law requires type approval for all intentional radio transmitters sold or used in Japan. This reference covers the certification process, applicable ARIB standards, module-level approval paths, costs, and certification bodies.
- [Terminal Blocks & DIN Rail Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/terminal-blocks-din-rail/): Screw, cage clamp, and spring clamp terminal block sourcing guide: pitch variants, DIN rail types, current ratings, UL 508 / IEC 60947-7-1 compliance, Chinese manufacturers, and failure modes in industrial applications.
- [UKCA Marking: Post-Brexit UK Product Certification](https://china-sourcing-agents.com/wiki/ukca-marking/): UKCA (UK Conformity Assessed) is Great Britain's post-Brexit product marking scheme for electronics, replacing CE for the England, Wales, and Scotland market. This reference explains the regulatory framework, timeline for CE phase-out, Approved Bodies, and practical steps for electronics exporters.
- [UN 38.3 Battery Transport Testing: Requirements for Air Freight](https://china-sourcing-agents.com/wiki/un38-3-battery/): UN 38.3 testing is required for all lithium batteries transported by air under IATA DGR. This reference covers the 8 mandatory tests, who must hold the test report, accredited Chinese labs, costs, and the most common documentation failures.
- [USB-C Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/usb-c-connectors/): Technical sourcing reference for USB-C connectors from China. Covers receptacle types, USB 2.0 through USB4 pinouts, PD 3.1 EPR ratings, counterfeit detection, and QA failure modes from Chinese manufacturers.
- [USB-A, Micro-B & Mini-B Connectors: China Sourcing Reference](https://china-sourcing-agents.com/wiki/usb-legacy-connectors/): Technical sourcing reference for USB-A, Micro-B, and Mini-B connectors from China. Covers mating cycle ratings, counterfeit USB-A 3.0, Micro-B retention force failure, pad lifting defects, and key Chinese suppliers.
- [Waterproof Circular Connectors: GX, SP Series — China Sourcing Reference](https://china-sourcing-agents.com/wiki/waterproof-circular-connectors/): GX12/GX16/GX20 aviation connectors and SP13/SP17/SP21 series: IP67/IP68 ratings, current ratings, thread-lock vs bayonet, male/female convention, Chinese manufacturers, and clone detection.
- [Wi-Fi 6 (802.11ax) Modules: China Sourcing Reference](https://china-sourcing-agents.com/wiki/wifi-6-modules/): Technical sourcing reference for Wi-Fi 6 and Wi-Fi 6E modules from China. Covers key chipsets from Qualcomm and MediaTek, IoT-focused options like ESP32-C5, and FCC/CE certification complexity for 6 GHz band.
- [X-Ray Inspection for Electronics: BGA & AXI Reference](https://china-sourcing-agents.com/wiki/x-ray-inspection/): Technical reference for X-ray inspection of electronics assemblies — covering BGA void analysis per IPC-7095C, 2D vs 3D AXI, equipment types, sampling strategy, and how to specify X-ray requirements when sourcing PCBAs from China.
- [Zigbee Modules: Sourcing Reference for Smart Home & IIoT](https://china-sourcing-agents.com/wiki/zigbee-modules/): Technical sourcing reference for Zigbee modules from China. Covers CC2652R vs EFR32MG24 chipsets, Matter over Thread certification, Chinese-market TLSR8258, and CSA compliance verification.

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