| PROTECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| IT PRO-TECH LIMITED | Private company limited by shares | Dissolved |
| Protech Limited | Private company limited by shares | Live |
| TOP PROTECH CO LIMITED | Private company limited by shares | Live |
| SIT ProTech Limited | | Live |
| PROTECH CENTURY LIMITED | Private company limited by shares | Live |
| PRO-TECH ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| PROTECH HEALTHCARE LIMITED | Private company limited by shares | Dissolved |
| INGRAM PROTECH LIMITED | Private company limited by shares | Live |
| PRO-TECH INNOVATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| SALEMAY PRO-TECH LIMITED | Private company limited by shares | Live |
| Skyware ProTech Limited | Private company limited by shares | Live |
| Protech Sports Limited | Private company limited by shares | Live |
| Protech Supply Limited | | Live |
| PRO-TECHNIC COMPANY LIMITED | Private company limited by shares | Live |
| PRO-TECHNIC MACHINERY LIMITED | Private company limited by shares | Live |
| ProTechnology Limited | Private company limited by shares | Live |
| PROTECH-SOLUTION LIMITED | | Live |
| Protechssor Limited | Private company limited by shares | Live |
| GENERAL PROTECHT GROUP LIMITED | Private company limited by shares | Live |