| Sr# | Company | Standard | Certificate Number |
| 1231 | Al Yamama Company for Trading and Contracting | ISO 18001:2007 | 300CN150741980 |
| 1230 | Al Yamama Company for Trading and Contracting | ISO 14001:2004 | 500CN150661950 |
| 1229 | Al Yamama Company for Trading and Contracting | ISO 9001:2008 | 100CN156281978 |
| 1228 | Haif Ready Mix Concrete | ISO 18001:2007 | 300CN150541580 |
| 1227 | Haif Ready Mix Concrete | ISO 14001:2015 | 500CN150491586 |