... R & D wireless communication antennas. Product focus: GSM antennas, GPS antennas, WIFI antennas ,Yagi antennas, Base Station antennas, CDMA/PHS/3G/4G antennas, 2.4GHz (wi-fi ... transformer terminals, wireless public telephone, wireless data transmission, satellite positioning, radio broadcast radio and television, and other civilian communication system applications. Yin Chi ...