1 - High lumen efficient, up to 160lm/W2 - Long working time: 100, 000hrs3 - High quality: 7 years warranty4 - Best quality: SMD5050 led chips, Inventronics driver, IK105 - Wider Voltage: AC100-305V, 347Vac, 480Vac6 - Best price: Manufacturer original price, no middle man7 - Best partner: Hishine focus on LED Industrial lighting over 11 years, we are very familiar with US, Canada and Europea markets with CE RoHS UL DLC premium EMC CB IK08 IK10 ISO: 9001 certifed