1. 3DR Holdings LLC
2. Acciona
S.A.
3. Balfour Beatty plc
4. Beijing Huashang Luhai Technology
5. Cazza Construction Technologies
6. Cobod International A/S
7. Contour Crafting Corporation
8. CyBe Construction B.V.
9. Dus Architects
10. Heidelbergcement AG
11. ICON Technology Inc.
12. Sika AG
13. Skanska AB
14. The Holcim Group
15. Yingchuang Building Technique Co.Ltd.