We, established in 1976, and got ISO9001 Certificate, has been the top one surge protection device (SPD) for telecommunications, electronic components & accessories manufacturer in China. The products are approved by UL, CSA, VDE, TUV etc, and exported through the world with great reputation. The main products include: Surge protection devices for Power supply system&IT system, Varistors, PTC and NTC Thermistors, Gas Discharge Tube etc For the more detailed, please visit our web: Http://***** Our main customers are included GE, LG, Philips, ZTE, HUAWEI etc.