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OEM LED Filament Bulbs & G4/G9 Lamps from a Factory in Dongguan, China

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Three questions when LED bulbs do not match: did the shipment, reference sample or comparison method change?
LED filament Bulb
Your LED Bulb Golden Sample Is Aging Too

Featured image: Original editorial diagram. These are investigation paths, not findings about a HongYu product or an actual rejected shipment. The buyer approved the sample.

LED bulb approval requires connection fit, installed fit and service fit
LED filament Bulb
Your LED Bulb Fits. Can Anyone Replace It Later?

Featured image: Original editorial diagram. Not a product test or an installation instruction. A decorative LED bulb can pass sample approval, screw into the correct

Approved LED bulb parts do not automatically form an approved build; release a defined configuration with evidence and batch identity
LED filament Bulb
Two Approved Parts Do Not Make an Approved LED Bulb

Featured image: Original editorial diagram. It does not represent actual component approvals, certification or HongYu test results. A supplier has two acceptable drivers and two

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