| Company/Address | System | Country | Scope | Date of original | Date of certificate | Valid Untill | Status |
| ALTEMTHAI CO., LTD. /16/3 Moo. 8, Rahaeng Subdistrict, Lat Lum Kaeo District, Pathum Thani Province 12140 | ISO9001:2015 | Thailand | ‘”The manufacturer and trading of traffic equipment such as W-Beam guardrail and post, lighting poles, lamps, road stud, traffic signs and road signs etc. “ | Mar 22’2025 | Mar 22’2025 | Mar 21’2028 | Accepted |