1. Saudi Building Systems Mfg. Co.
2. Red Sea Housing Services
3. Kirby Building Systems
4. Zamil Industrial investment Co.
5. United Company for Caravans and Prefab Houses
6. Al-Shahin Metal Industries
7. Al Jazera Factory for Engineering Construction Co. Ltd.
8. Saudi Company for Prefabricated Buildings LLC
9. TSSC Group
10. Eastern Precast Concrete