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Qualified suppliers and service providers of major enterprises such as Sinopec, CNPC, and CNOOC.
“ISO 9001 Quality Management System” (Lu Aiping, May 10)
Release Date:
2019-12-19 18:20
Source:
Technical Updates
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Chemical Equipment Maintenance Technology Training Base, Petrochemical Vocational and Technical College, Yunxi District, Yueyang City
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