MUDANJIANG DONGXU MACHINERY CO., Ltd Mudanjiang Dongxu Machingery Co., Ltd is situated in Mudanjiang city Heilongjiang province of China and takes up land about 6000 square meters. The corporation has four departments including the production and technology, the quality administration and inspection, the supply and marketing as well as finance. The staffs and workers of the corporation are a hundred and two in number, among them including four senior engineers, twelve engineers, fourteen administrators. It has the fixed assets over ten millions YUAN RMB and more than forty sets of machines. Mudanjiang Dongxu Machingery Co., Ltd is a specially appointed supplier to China National Petroleum Corporation (CNPC) and China Petroleum And Chemical Corporation (SINOPEC CORP) in the drilling tools, production tools and the fittings. Our corporation has passed ISO 9001:2000 standard quality system authentication.