Shenzhen Shiji Tianyuan Environmental Protection Technology Co, .Ltd. is a high-tech enterprise located in Futian Bonded Zone, Shezhen, had under it four divisions for instrumentation, environmental engineering, environmental consulting and solid waste disposal, its holding companies including Wuhan Shiji Tianyuan Environmental Protection Technology Co.,Ltd., Hunan Jinhui Environmental Protection Technology Co., Ltd., and Shanxi Shiji Tianyuan Environmental Protection Technology Co., Ltd., also set up some offices in many provinces of China. The company has 148 technicians and some of them are doctorate or master's degrees, meanwhile actively cooperates with the well-known domestic and foreign enterprises, research institutes, tertiary institutions, to develop the leading technologies and products and has achieved a number of international and domestic certification. The company’s leading-edge technology and quality service are well received by customers; particularly in the field s of pollution sources monitoring the company has been in a domestic pacesetter status.