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3W/5W/7W/10W White COB LED, 10pcs, DC9-32V 13mm/28mm LED Chip
The basics of Chip-on-Board (COB) LEDs
What are the differences between COB and SMD LED Chips? - GRNLED
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COB LED Strip Lights: A Comparison with SMDs LED - Myledy
20/30/50W Waterproof IP67 COB LED 3000K/6000K Chip With Lens 110V/220V
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3-4V Round COB LED Light 50mm Diameter Double Ring Cold White Lamp 5-7W Chip | eBay
