| Sr# | Company | Standard | Certificate Number |
| 451 | Z-Mix for Ready Mix Concrete & Block (Zaban Abdullah Al-Harcy Contracting Est.) | ISO 14001:2004 | 500CN150591562 |
| 450 | Z-Mix for Ready Mix Concrete & Block (Zaban Abdullah Al-Harcy Contracting Est.) | ISO 9001:2008 | 100CN155081560 |
| 449 | Al-Salamah Road Paint Factory | ISO 14001:2004 | 500CN150601566 |
| 448 | Al-Salamah Road Paint Factory | ISO 9001:2008 | 100CN155091564 |
| 447 | Electrical Ways Factory | ISO 18001:2007 | 300CN150671558 |