Original business license
Qualification certificate of class a equipment supervision unit
Approval certificate for inspection and testing institution of special equipment
Certificate of rating for nondestructive testing institutions of special equipment in China
Radiation safety permit
China Metrology Accreditation (CMA) qualification certificate
China National Accreditation Board for conformity assessment (CNAS) laboratory accreditation certificate
Judicial authentication permit
Qualification certificate of import and export commodity inspection and appraisal institution
Admittance certificate for China Petroleum Engineering Construction Contractor
Qualification certificate of China Petroleum products factory supervision unit
Qualified suppliers of Sinopec