Shenzhen Hongyuan Xintong Technology Co., Ltd. is based in China and lists GPS person tracker and Car alarm with GPS/GSM tracker on Global Trade Plaza. The company lists 2005 as its year of establishment. The GPS person tracker is a GSM/GPRS and GPS satellite-based device with dimensions 78.4mm x 45.4mm x 16.5mm, weight 40g, and uses a Sirf III chip and Siemens MC55/MC56 module. The Car alarm with GPS/GSM tracker is a vehicle tracker with remote control for oil and circuit via mobile phone, supporting GSM/CDMA/GPRS networks and GPS satellite positioning.