| Company/Address | System | Country | Scope | Date of original | Date of certificate | Valid Untill | Status |
| WORK LUBRICANTS (THAILAND) CO.,LTD / 115/1 Soi Tiwanan 3 ,T.Talatkhwan ,A. Mueangnonthaburi ,Nonthaburi 11000 | ISO9001:2015 | Thailand | “Selling petrochemical products Including all types of industrial lubricants” | Sep 9’2020 | Sep 2’2023 | Sep 8’2026 | Accepted |