50W 2800lm led ceiling panel light a, Super Thin: 13mm thickness b, High PF: over ... , High Efficiency: over 85% d, 2 year 50W 2800lm led ceiling panel light 1. Advantage: a, Super Thin: 13mm thickness b, High ... . 2) Application: a, Industrial lighting b, Construction illumination c, Indoor decoration illumination of store, shop, window, hotel, dining room, d, Local ...