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TS16949 Automobile Industry Certificate
Certificate of Material Supplier of Petrochina Daqing Oilfield
ISO14001 Environmental Management System Certificate
ISO9001 International Quality Management System Certificate
OHSAS18001 International Occupational Health and Safety Management System Certificate
API SPEC 5CT Certificate
API SPEC 5L Certificate
Manufacture License of Special Equipment
Certificate of Material Supplier of China National Petroleum Corporation