Our factory was founded on 1999 and more than 100 staffs working for cellphone jammers,signal blockers,signal shield,GPS Jammer, WIFI Jammer, 3G Jammer, 4G Jammer,Audio Jammer,Wireless Video Jammer, Dual Band Repeater,Tri Band Repeater etc in mainland ,China. We pride ourselves in providing the best quality products and best level of service to our customers.