| Company/Address | System | Country | Scope | Date of original | Date of certificate | Valid Untill | Status |
| UNION DUCTILE CASTIRON Co.,Ltd. //3/3 Moo 6, T. Kokgabue,A. Muang Samutsakhon, Samutsakhon, 74000 ,Thailand | ISO9001:2015 | Thailand | ‘”Manufacture of Auto Parts, Construction, Electrical Systems and According to Customer Requirements by Metal Casting “ | Nov 28’2020 | Oct 16’2026 | Nov 27’2029 | Accepted |