With the acceleration of the legal system in China and the continuous construction of the legal society, the concept of the sunshine governm...MORE+
Built-in GPS / Beidou positioning module, can achieve global real-time positioning. Built-in 3G / WF...
Support for a wide range of file formats: In addition to support the law and time to collect audio a...
With the coal mine monitoring market a new round of demand for transformation of the strong, more and more sec...MORE+
In recent years, China\'s coal industry is a very prominent problem is mine frequent, to the country and the p...MORE+