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Qualification and Certificates Date
  Manufacture License of Special Equipment (Pressure Pipe Components), issued by General Administration of Quality Supervision, Inspection and Quarantine, People’s Republic of China.   --  
  Certificate of Authority to use the Official API monogram, grant by American Petroleum Institute.   --  
  Occupational Health and Safety Management System Certificate (GB/T 28001-2001), issued by China Classification Society Certification Company.   --  
  Environmental Management System Certificate (GB/T 24001-2004/ISO 14001:2004), issued by China Classification Society Certification Company   --  
  Quality Management System Certificate (GB/T 19001-2008/ISO 9001:2008), issued by China Classification Society Certification Company   --  
  Quality Management System Certificate (ISO 9001:2008), issued by China Classification Society Certification Company.   --  
  Accredited Laboratories Certificates issued by China National Accreditation Service for Conformity Assessment   --  
  Recognized as The Oil and Natural Gas Pipeline Engineering Technological Research and Development Center in Shandong by Department of Science & Technology of Shandong province   --