AUTHENTICATION

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:November 9,2023

Expiry date:December 17,2026

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:November 14,2023

Expiry date:December 18,2026

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:November 14,2023

Expiry date:December 4,2026

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:January 27,2024

Expiry date:January 26,2027