Xi¡äan TianRui Petroleum Machinery Equipment Co., LTD. (short name:TR solid Control), was located in Weiyang District, Xi¡¯an, Shaanxi province,China. The company covers an area of 40 acres, now have 100 employees, and 30 management staff, including 8 engineers, senior engineer and one Doctor, 21 Bachelor degree or above. Company register capital is 5 Million RMB. And we have passed ISO9000 and are applying for US API Authentication.