... 2700K,4200K,6400K 4)OEM Competitive Power Tri-phosphor Powder Tube Bulb Lamp 4U,Bulb Lamp,High Power Bulb Lamp, ... work station3)Commercial lighting,household lighting,back lighting, step lighting, light boxes4)Department store,merchandising, exhibition stands, and panelsSpecifications of ... standard incandescent lamp2,Service life reach a length of 8000h3,Tube is to use the high quality pure tri-color ...