... price.hot sale COB ceiling lamp for showroom.commercial COB showroom LED ceiling lamp,round COB showroom LED ceiling lampCE&ROHS approval,2012 ... Humidity 10%~90% R.H. Operating Temperature -25°C~55°C Color Rendering Index ≥75 Color Temperature 2800~3200K(warm ... Edison,different chips with different price Showroom LED Ceiling Lamp Application:Indoor ceiling in the office,house,exhibition,museum,aisle, ...