Quality Documentation
Manufacturing standards and documented compliance scope
Review the management-system, product-conformity, manufacturing-license and standards-participation categories presented by GUOLIN. Confirm the applicable document scope and current validity for each product and project.

ISO 9001
Quality Management System
Design and manufacture of ozone generators and supporting equipment.
ISO 14001
Environmental Management System
ISO 45001
Occupational Health & Safety Management
CE
European Conformity
Ozone generator and PSA oxygen generator series — meets EU directives.
TÜV
TÜV Verified Certificate
Supplier assessment / production capability verification.
SGS
SGS Verified Certificate
Supplier capability and quality assessment.
Special Equipment Production License
State Administration for Market Regulation, China
Class A2 pressure vessel design and manufacture license.
GB/T 37894-2019
China National Standard — Technical Requirements for Ozone Generators for Water Treatment
Lead drafter — Qingdao Guolin Technology Group Co., Ltd.
CJ/T 322-2010
China Urban Construction Industry Standard — Ozone Generator for Water and Wastewater Treatment
Lead editor — Qingdao Guolin Technology Group Co., Ltd.