Henan Doing Mechanical Equipment Co.,ltd is specialized in researching and developing technology of Oil Extraction, Oil Refinery & Fractionation and Bio-diesel since 1967. Doing is also a professional leading co***ny in contracting turnkey projects. Doing Group owns three branches, formed of Henan Doing Mechanical Equipment Co., Ltd, Xinxiang Doing Renewable Energy Equipment Co., Ltd and Xinxiang Leesyn Equipment Co., Ltd.
Doing focuses on researching & developing, designing, manufacturing, marketing and...
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