... for office lighting .4.Optimized light extraction system delivery high lumens.5.No RF interference ,Lead free .6.Long ... color temperature can be adjusted from 3000K to 13000k.11.High POWER complication , no transformer ,without additional power consumption.12 ... .FCC &CE ,ROHS Certificate approval.Applications:Living room, bedroom,kitchen,washroom.School,university ,hospital,hotel.Conference ,meeting ...