1. Andersen Windows Inc.
2. ASSA ABLOY Group
3. Chem-Pruf
4. Cherwell Window
5. Consort Limited
6. Dalian Shide Plastic Building Materials Co. Ltd.
7. Dortek Ltd.
8. Ecoste
9. Epwin Group
10. Fenesta Building Systems
11. Fiber Tech Pvt. Ltd.
12. Fiberline Composites A/S
13. Fiberr Xel
14. Hardy Smith Designs Private Limited
15. Pavilion Glass Ltd.
16. Pella Corporation
17. Qingdao Tongsan Plastic Machinery Co. Ltd.
18. Ravalsons
19. Special-Lite Inc.
20. Superior Conservatories Ltd.
21. Sussex Glazing Limited
22. Vello Nordic AS
23. Virtuoso Doors Limited
24. Worthing Windows
25. Yashashri Polyextrusion Pvt. Ltd.