As a kind of large animal living in extremely cold zone, yak is a must-have for Tibetan to make a living. However, Tibetan are facing a series problems involved with yak feeding and management. For example, yaks are lost or stolen frequentl

We all want to know the location of our favorite person while he/she travelling in vehicle and the safety of them, right. What can we use to track the position of the person, an automobile, and a pet? Definitely, the China GPS System will h