hello friends, we are manufactures of T5 energy saving tubes in China. Our T5 lights mainly for factories,schools,offices,supermarkets,underground railways etc.. Our T5 straight lights can save 40%-50% electricity,and you can take back your cost in 5 months. We’ve done a test for three years,and for 2,000pcs,you can save at least $50,000 which is a large abount of money,and right now,we all recommond environemantal,energy saving,so it is really big project. Our T5 ES lights have passed   CCEE, CE, EMC, ETL and FCC approval Standards and best quality. We had 14W,21W,28W,35W,56W and have a lifespan for 15,000h. Color Temperature: 2700K-6400K. The light tube had ONE-YEAR WARRANTY and the bracket had TWO-YEAR WARRANTY. If you want to know more about our products or had any problems, please be free to ask us by email,we want to do business with you. Your timely reply would be appreciated. Currency: USD Delivery: according to offer,we usually do 30% T/T deposit and 70% balance L/C at sight.