600x600 LED Ceiling Light Panel AC100~240V,DC30~40V,Ra ... IES,CE RoHS, 3 year warranty 600x600 LED Ceiling Light Panel1. High Luminous efficiency of up to 75 ... Various dimensions are available;9. Soft and wide light emitting;10. Special circuit design, avoiding the ... in: Offices, meeting room, showroom, bedroom, schools, hospital, factory, workshop, lobby, metro, airport, corridor, hotels, restaurants, ...