Certificate of Promoting Scientific and Technological Progress in the Company’s Petrochemical Industry-Yueyang Changling Equipment Research Institute Co., Ltd.

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Qualified suppliers and service providers of major enterprises such as Sinopec, CNPC, and CNOOC.

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Certificate of Promoting Scientific and Technological Progress in the Company’s Petrochemical Industry

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Chemical Equipment Maintenance Technology Training Base, Petrochemical Vocational and Technical College, Yunxi District, Yueyang City

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