half spiral CFL lighting tube

half spiral CFL lighting tube: 1. Tube diameter:9 17mm; 2. Power: 20w; 3.Light efficiency:>55lm/w 4.Ra>82. 5.Color temperature:6500K. Description: halfspiral CFL lighting tube: 1.)Save 80% energy more than incandescent lamps; 2.)Tube adopts pure tricolor phosphor powder, 3.)Power Factor (P.F):less than 0.6 or more than 0.98, 4.)All the lamps are in 3000 10000hrs, 5.)Warm white and cool white or daylight available. 6.)100% tri-color phosphor powder. 7.) Low heat emission. 8.) No flash. Application: Home, Offices, Shops, Department Stores, Clubs, Restaurants, Hotels, Supermarkets