Nanjing Desi Weiye Software Technology Co., Ltd. Specializes in the development of next-generation network NGN converged communication emergency command and dispatch system, and is a leading domestic government and enterprise information and communication integration solution provider. The company is located in Nanjing, capital city of Jiangsu Province. The company has formed cooperative partnerships with many well-known enterprises and scientific research institutions at home and abroad, including the Academy of Postal Sciences, Theil Laboratory, Telecommunication Research Institute, China Telecom, China Mobile, China Unicom, AVAYA, CISCO, Dialogic, Bell Alcatel, etc.

YX International Information Co., Ltd is a manufacturer of GoIP GATEWAY, VoIP Products, GSM Modem and IP Phone with well-equipped testing equipment and strong technical force. Which is found in 2007, with almost 5 years export experience.

DBL Technology Ltd, is a leading manufacturer in developing and manufacturing advanced VoIP products for the worldwide market.DBL has been dedicated in the development of the latest VoIP technology for the last 15 years and has developed a wide range of VoIP Gateway and IP Phone.DBL is committed in offering high quality, innovative, and affordable products.

Shenzhen Haoday Technology Co., Ltd. Established in 2006, with more than 10 year's experience in GPS tracker, GPS fleet tracking system, is a leading hi-tech supplier and specializing in the fields of GPS pesonal and vehicle trackers.