Double-ended sodium lamps (coated) 1.high efficiency, 2.long life, 3.excellent color rendering, 4.no ultraviolt radiation, Product Description:Feature:Compact size,high efficiency,long life,excellent color rendering,no ultraviolt radiation,less color temperature shift.ultraviolet-stop bulb.eliminare harm of ultraviole radiationApplication:Lighting of supermarket,airport,hall of hotel.road,city ...