... Color temperature: CW: 5,500 to 6,500KNW: 4,000 to 4,500KWW: 2,700 to 3,300K3.Standards: IEC60061, IEC6063 ... We give 2 years warranty for our led bulbs to our customers. Any quality problem, we will ... check, aluminum plate check, power supply check and the finished products need to pass 48 hours aging test.2 ... price for big order quantity. 220V AC/DC High Power and Energy Saving 10W LED high bay Lights