... 4.360 degree beam angle High quality 40w led light for warehouse (CE&RoHS) Bulb Range:30W 40W 60W (E27, ... , no warm up or cold start problems7.Solve 4 difficulties for led packaging, heat sinking, operation life span, luminous efficiency.8 ... , make sure the radiation diameter on the ground is accord with the standards for size. ApplicationWarehouse, storage room, building, corridor, museumCoffee shop ...