| Sr# | Company | Standard | Certificate Number |
| 321 | Uniserv Gulf | ISO 9001:2008 | SA39 |
| 320 | Ruwailan General Contracting Est. | ISO 9001:2008 | SA040 |
| 319 | Ahmad Al-Tazi Rockwool Factory | ISO 9001:2008 | SA043 |
| 318 | Najran Co. For Trading & Contracting | ISO 18001:2007 | SAU033 |
| 317 | Najran Co. For Trading & Contracting | ISO 9001:2008 | SA037 |