... 4.360 degree beam angle High quality 40w led light for warehouse (CE&RoHS) Bulb Range:30W 40W ... warm up or cold start problems7.Solve 4 difficulties for led packaging, heat sinking, operation life span, luminous efficiency ... standards for size. ApplicationWarehouse, storage room, building, corridor, museumCoffee shop, supermarket, office, factory, workshopIndoor lighting, indoor basketball court, ...