HangZhou Unis Electronic is a joint--Venture company which founded in 2001(Former is XiaoShan LiBaoan Company from 1996).It is the professional manufacture for the Electret Condenser Microphone(ECM) and ear piece in electroacostic field.With reseach center in Korea,Unis own two production sites at HangZhou and Shenzhen, and slso the sales branchs at ShenZhen,Shang hai BeiJing,HongKong and etc.Unis is one of the earliest manufactures who have the ...