led tube: 1.Original manufacturer 2.Aliuminium PCB, good heat sink ability 3.Long life span:50000 hours 4.CE, RoHS, C-tick Yason LED tube Features:Approved patent: National No.: ZL200920135298.1International patent No.: PCT/CN2010/070886Certification: CE, RoHS, FCC Green Illumination: No strobing during working, fast response (no delay), no damage with frequency switching and energy saving 66% ...