Dongying Zhao Xin Industry and Trade Co., Ltd. was established in 1999. It covers an area of more than 5000 square meters which manufacture different oilfield down hole tools and accessories such as packer series, tubing anchor, torque anchor, centralizer. The products have been widely applied in oilfields in China and entered markets abroad.The company, which conducts scientific research, development, manufacture, sale and after sale service, is one enterprise for oilfield tool and equipment manufacture.The company conducts management mode of combination between regulation and humanity, develops perfect management system and inspiring system, has achieved ISO9001 international quality system certification, API11D1, first order market entry qualification of Sinopec.The company has owned practical, specialized, experienced and powerful research and development team, applied and got more than 50 national patents awarded by National Intellectual Property Bureau, widened the markets in Nei meng, Xin jiang, and Liao he, etc. , and established approved reputation.