... Lights: 1.ELT&UL listed,Cree chips.. 2.5 years warranty 3.Lifespan:>30,000H 4.Factory price,High quality LED ceiling light ... lighting engineering6. Professional after sale service (5-years-Warranty for LED lights)4. Cooperation Partner and Engineering ProjectsPartner: Philips , Killark , Grainger , Grandlite ...