1. Retrofiting T8 to T5 tube. Direct plugged in to the existing fixture of T8 lamps. 2. No need to install additional electronic ballast. Save electricity up to 50% and more. 3. No labour and No modification cost to the existing light fixtures. 4. Save electricity up to 50% and more. 5. Thd can down to 15% . 6. No sound and no flickering during startup. 7. Special design for light effects, at least 30% more lumens up. 8. Long life time (as compared with common type T8 tube) . 9. Due to no labour cost involved in the retrofitting project, total investment can be returned less than 6-9 months. Technical Specification: 1) . I / P: 110V-130V or 220V-230V 2) . Tube: T5 fluorescent lamp 8/W 4w / 21w / 28w 35W