Henzhen Sai Tong Tian Electronic Technology Company, Ltd is founded in 1998. It has been devoted to the R&D of mobile communication network products since then. Our products are classified into 2 types: mobile phone repeaters and mobile phone jammers. We meet the requirement of CE&ROHS. With excellent R&D teams, well-trained employees and advanced manufacturing& testing equipment, we are ready to offer you best service all the time.