Cheap And Discounts 5pcs/lot COB LED Chip 3w 5w 10w 12w 15w Flip Chip Light Board 2011 2820 1917 SMD White COB Lamp Beads Light Source for Downlight Wholesale. Buy Directly From Merchant ChampionLighting Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.