System authentication
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System name:quality management system Standard:GB/T 19001-2016/ISO 9001:2015 Certification scope:γ-Production of butyrolactone,N-methylpyrrolidone and 2-pyrrolidone Date of first issuance:October 19,2015 Date of issuance:October 25,2021 Expiry date:December 17,2023 |
System name:environmental management system Standard:GB/T 24001-2016/ISO 14001:2015 Certification scope:γ-Production and related management activities of butyrolactone,N-methylpyrrolidone and 2-pyrrolidone Date of first issuance:December 19,2017 Date of issuance:October 25,2021 Expiry date:December 18,2023 |
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System name:occupational health and safety management system Standard:GB/T 45001-2020/ISO45001:2018 Certification scope:γ-Production and related management activities of butyrolactone,N-methylpyrrolidone and 2-pyrrolidone Date of first issuance:December 5,2017 Date of issuance:October 25,2011 Expiry date:December 4,2023 |
System name:IATF16949 Quality Management System of Automobile Industry Standard:IATF16949:2016 Certification scope:production and research and development of N-methylpyrrolidone and electrolyte Date of issuance:February 16,2021 Expiry date:February 15,2024 |