| № | Regional Comprehensive Service Centres | Sertificate |
| 1 | Operations Department | O'z DSt ISO 9001:2015 |
| 2 | Mirabad branch | O'z DSt ISO 9001:2015 |
| 3 | Kokand branch | O'z DSt ISO 9001:2015 |
| 4 | Andijan branch | O'z DSt ISO 9001:2015 |
| 5 | Bukhara branch | O'z DSt ISO 9001:2015 |
| 6 | Kashkadarya branch | O'z DSt ISO 9001:2015 |
| 7 | Navoi branch | O'z DSt ISO 9001:2015 |
| 8 | Namangan branch | O'z DSt ISO 9001:2015 |
| 9 | Karakalpak branch | O'z DSt ISO 9001:2015 |
| 10 | Samarkand branch | O'z DSt ISO 9001:2015 |
| 11 | Surkhandarya branch | O'z DSt ISO 9001:2015 |
| 12 | Khorezm branch | O'z DSt ISO 9001:2015 |
| 13 | Fergana branch | O'z DSt ISO 9001:2015 |
| 14 | Djizzak branch | O'z DSt ISO 9001:2015 |
