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API-5CT
API 16C-0130
API 6A
API Q1-4708
CERTIFICATE OF REGISTRATION
ENVIRONMENTAL MANAGEMENT SYSTEM CERTIFICATION
Environmental and occupational health certificate
Certificate Of Evaluation System ForAfter-sales ServiceOf Commodity
OCCUPATIONAL HEALTH AND SAFETY MANAGEMENT SYSTEM CERTIFICATION
Qualification certificate of PetroChina well control equipment production enterprise 1
Qualification certificate of PetroChina well control equipment production enterprise 2
Special equipment production license (pressure pipeline)

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