ECO t5 to t8 tube in tube 1.CRI>85R, PF:0.94 ... .Energy-saving fluorescent lamp 4.tube in tube ECO t5 to t8 tube in tube 1.CRI>85R, PF:0.942 ... design inside and outside the tube, T5 tube is similar to the size of the pure rare earth tricolor tube, outer ... , its life of more than 20,000 hours. Mainly used to replace traditional T8 fluorescent lamps and inductive decoration clothes ...