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| API 6A-1046 | API 16C-0130 |
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| API Q1-4708 | Special equipment production license (pressure pipeline) |
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| CERTIFICATE OF REGISTRATION | ENVIRONMENTAL MANAGEMENT SYSTEM CERTIFICATION |
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| Environmental and occupational health certificate | Certificate Of Evaluation System ForAfter-sales ServiceOf Commodity |
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| OCCUPATIONAL HEALTH AND SAFETY MANAGEMENT SYSTEM CERTIFICATION | Qualification certificate of PetroChina well control equipment production enterprise 1 |
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| Qualification certificate of PetroChina well control equipment production enterprise 2 |
Tel：+86-0517-87221172
Tel：+86-0517-87221123
Email：hzdongjun@hzdjm.com
Addr：No.10, North four, Economic Development Zone Hongze,Jiangsu Province, China
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