System name: Quality Management System

Standards compliant:GB/T 19001-2016/ISO 9001:2015

Certification scope:γ-Butyrolactone, N-methylpyrrolidone, 2-pyrrolidone production

Date of first issue: October 19, 2015

The date of this issuance: December 18, 2017

Valid until: December 17, 2020

System name: Occupational Health and Safety Management System

Standards compliant:OHSAS 18001:2007 GB/T 28001-2011

Certification scope:γ-Butyrolactone, N-methylpyrrolidone and 2-pyrrolidone production and related management activities

Date of first issue: December 5, 2017

This certificate issuance date: December 5, 2017 Valid until: December 4, 2020

System name: Environmental Management System

Standards compliant:GB/T 24001-2016/ISO 14001:2015

Certification scope:γ-Butyrolactone, N-methylpyrrolidone, 2-pyrrolidone production and related management activities

Date of first issue: December 19, 2017

The date of this issuance: December 19, 2017

Valid until: December 18, 2020

System name: IATF16949 management system

Meet the standard: IATF16949: 2016 version standard

Certification scope: production and development of N-methylpyrrolidone and electrolyte

The date of this issuance: February 5, 2018

Valid until: February 4, 2021