shiang-shung north, taichung, Taiwan

PORTech is the original manufacturer in Taiwan with 34 years, therefore we&＃039;ll do our best to offer the best service and support. PORTech offer E1 /T1 GSM Channel bank VoIP GSM Channel ban...

Other, China

Shaanxi Foresight Electronics Co., ltd. is the high-tech enterprise specially engaged in R&D and production and marketing of all kinds of optical communication networks, backup power supply ma...