... ,Activated without delay,High power factor,Lumens depreciation < 5/1000 ,Eyesight protection,Specially use in long time work ... assure the high quality and good after-sale service.5.The light transmission of LGP (light guide plate) ... fixation and maintainance by professional technical person.Application of led panel : 1),Commercial Lighting ,Office Lighting ,Warehouse Lighting ,Supermarket Lighting2), ...