| Certification | Certification Date | Validity Period | Accreditation Authority | 
|---|---|---|---|
| ISO 9001 (QMS, Quality Management System)  | 
                            1996.05.14 | 2023.06.01~2026.05.31 | Lloyd's Register Quality Assurance | 
| ISO 14001 (EMS, Environmental Management System)  | 
                            2008.10.19 | 2023.10.19~2026.10.18 | Lloyd's Register Quality Assurance | 
| ICMC (International Cyanide Management Code)  | 
                            2008.03.10 | 2023.04.19~2026.04.18 | International Cyanide Management Institute | 
| ISCC PLUS (International Sustainability & Carbon Certification PLUS)  | 
                            2021.10.21 | 2024.10.21~2025.10.20 | Control Union Certifications Germany GmBH |