1)led ceiling light design 2)ceiling for shop,hotel 3 ... install and maintain. Cut cost by reducing re-lamp frequency, especially in difficult to reach area ... span: 50,000hrs, 6 times longer than traditional lamp.4. Strict quality control, 72 hrs aging and ... lighting, such as mall, store, hotel, office, supermarket, commercial building, station, bus, warehouse, signage, residential, parking lot, home, ...