1. Balfour Beatty PLC
2. Boral Ltd.
3. CEMEX S.A.B. de C.V.
4. Coltman Precast Concrete Limited
5. CRH PLC
6. Elematic Oyj
7. Forterra Inc.
8. Gulf Precast Concrete Company L.L.C.
9. Lafarge Holcim Limited
10. Laing O’Rourke
11. Larsen & Toubro Limited
12. Skanska AB
13. Taisei Corporation
14. Tindall Corporation
15. Weckenmann Anlagentechnik GmbH & Co. KG