Best quality cob 10w 20w 30w cob led chip high power cob for lighting lamp

COB, (Chips on Board) , multi LED chips are packaged together as one lighting module.
Cob LED Light Source is a High efficiency, integrated, surface light source technology that mount the led chip on the high
reflective metal substrate.
This technology without the conception of holder, no plating, no Reflow soldering, no patch process, reduce the 30% process, so it
also cuts down about 30% cost.