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