| Company/Address | System | Country | Scope | Date of original | Date of certificate | Valid Untill | Status |
| MASTER POWER ENGINEERING LIMITED PARTNERSHIP // 31/9 Moo 11 T.Klongkoi , A.Parkgrade Nontaburi 11120 ,Thailand | ISO9001:2015 | Thailand | ‘”Design, Manufacture and Sale of electric Lamps,LED Lamps, Street Lamps, Coated Steel Poles and Steel Piles, Zinc for Electric Lighting, Solar Cell Lamps and Lithium Battery Assembly,” | Sep 06’2021 | Jun 12’2025 | Sep 05’2028 | Accepted |