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长城公司为中国石化总公司北京设计院与兰州炼油化工总厂机械厂合资经办的经济实体,已于1988年8月10日正式成立。该公司愿与国内外同行合作,为广大用
Great Wall Company is an economic entity jointly invested by Beijing Design Institute of China Petrochemical Corporation and Machinery Factory of Lanzhou Refining & Chemical Plant. It was formally established on August 10, 1988. The company is willing to cooperate with counterparts at home and abroad for the general use