... Communication Technology Co., Ltd (mainland company),SinoVoip Co.Limited (HK company )was founded in 2004, is located in Nanshan District, Shenzhen ... , Guangdong, China. Since its inception, following the world's most advanced network technology, combined ... building,industrical district ,chuangye Road,nanshan district,shenzhen,china Number of Production Lines:Above 10 Number ...