... 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. ... radiation diameter on the ground is accord with the standards for size. ApplicationWarehouse, storage room, building, corridor, museumCoffee shop, supermarket, ...