... :2700K,4200K,6400K 4)OEM Competitive Power Tri-phosphor Powder Tube Bulb Lamp 4U,Bulb Lamp,High Power Bulb Lamp,Economic ... ,Service life reach a length of 8000h3,Tube is to use the high quality pure tri-color flourescent powder, high photosynthetic efficiency ... and all your private information Competitive Power Tri-phosphor Powder Tube Bulb Lamp 4U