What's the different between SMD led downlight and COB ?
Sharing knowledge of SMD ,COB and MCOB
7W COB LED Light Bulb - LED Montreal
Cree XML2 LED 10W High power LED chip COB Grow light with PCB and DC Driver XML | eBay
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Comparing COB and SMD LED Work Lights: Features and Differences - Unilite - Portable LED Work Lights
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