1. Al Shahin Metal Industries
2. ArcelorMittal S.A.
3. Balex Metal Sp. z o.o.
4. Cornerstone Building Brands Inc.
5. DANA Group of Companies
6. Hemsec Manufacturing Ltd.
7. Isomec Srl
8. Isopan S.p.A.
9. Jiangsu Jingxue Insulation Technology Co. Ltd.
10. Kingspan Group
11. Lattonedil S.p.A.
12. Metecno India Private Limited
13. Multicolor Steels (India) Pvt. Ltd.
14. NAV-System Group
15. Nucor Corporation
16. Omnis Exteriors Ltd.
17. Owens Corning Incorporated
18. PFB Corporation
19. Rautaruukki Oyj
20. Romakowski GmbH & Co. KG
21. Tata Steel Limited
22. The Riverside Company
23. TONMAT GROUP
24. Trier Insulated Panels GmbH
25. Zamil Steel Pre-Engineered Buildings Co. Ltd.