LED Panel Light (60×60cm)

What to Check When Sourcing

The LED panel light market is saturated with products that hit their lumen spec on Day 1 but degrade significantly within 6 months. When sourcing commercial LED lighting from China, three things to verify before committing to a factory:

Driver quality. The driver is the most failure-prone component. Insist on a named-brand driver — Meanwell, MOSO, or Inventronics — rather than an anonymous “high-efficiency” unit. This is a key checkpoint in any factory audit for lighting products. Ask the factory for the driver’s datasheet and verify the model number is actually what they’re shipping.

LM79 test report. This is the photometric test report from an accredited lab (TÜV, Intertek, Bureau Veritas) — essential for electronics quality control documentation. The report shows real lumen output, efficacy, and CCT. If a supplier provides an internal test report rather than a third-party one, treat the spec as unverified.

Thermal pad between LED board and housing. Many budget panels skip or use minimal thermal interface material. Ask the factory to show you the assembly cross-section — the aluminum heatsink should make direct contact with the LED board through a silicone pad, not just air.

Common Issues

Batch-to-batch CCT drift — Color temperature can vary ±200K between production batches if the factory doesn’t bin LEDs. Specify a CCT tolerance in your purchase agreement (e.g., “4000K ±150K”) and test the first 10 units from each batch.

Driver flicker — Cheaper drivers produce measurable flicker that causes eye fatigue. For commercial power electronics and lighting sourcing, request a flicker measurement with the SVM (Stroboscopic Visibility Measure) specification in your QC checklist.

Missing or expired CE DoC — The EU Declaration of Conformity must be issued by the manufacturer and must cover the specific product model you’re ordering. For more on this, read our factory audit checklist which covers document verification in detail. Some factories use a DoC from a similar but different product.