Shenzhen Sai Tong Tian Electronic Technology Company Limited is located in the well-known high-tech city, Shenzhen of china, founded in January 2007. We are specialized in manufacturing communication products including Signal Repeater/booster/amplifier , Signal Jammer and Antenna. We mainly provide mobile signal repeater,TMA,TMB (tower mounted amplifier/booster),booster,and antennas of GSM,CDMA,DCS,WCDMA/3G,IDEN,TETRA,CDMA450M,GSM1900M and mobile signal jammer. We obtained ISO9001, CE, FCC and RoHS certificates and all of our products are strictly tested by QC department.