5m-20m 12v rgbww rgbcw 4 in 1 led strip light 5050 wifi app control power supply 2 buyers have to pay for the return cost and we will pay the cost for reshipping. All of our products are strictly made according to international IEC standard and are able to meet the requirements of VDE, CE, UL, CSA, PSE, TUV and EMC our manufacturing facilities in.