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Mudanjiang Dongxu Machinery Co.,Ltd is a specially appointed supplier to China National Petroleum Corporation and China Petroleum and Chemical Corporation in the drilling tools, production tools and fittings. Our co***ny has passed ISO 9001:2000 standard quality system authentication, and been honored with API spec-7-1 certificate by American Petroleum Institute.We have import and export power of goods and technique, and products have been exported to Middle East, Europe, America, Canada, Africa and other d...
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