... life time 4.CE, RoHS,RI t8 to t5 fluorescent lamp adapter(replace Old T8 fluorescent tube directly)T5- ... no noise,low work temperature,low power consumption,good for eyes.6,Built-in electronic ballast TUV ,IC ... standard quality for 20000hrs or 30000hrs time of warranty.7,G5 ... .3) Prompt delivery time.4).Got the patent for utility models and design.5). Many years OEM ...