www.eraytech.com. eRaytec International Inc. is a global IT company mainly develops and markets Global Positioning System (GPS) products worldwide. To be more competitive in GPS business field, eRaytec develop the complete Automatic Vehicle Tracking system (AVTS) hardware and application software that integrates GPS module, GSM/GPRS module, AVTS application software, and map into a complete wireless data transmission and vehicle tracking and management system.