| MASTERTEC LIMITED | Private company limited by shares | Dissolved |
| Mastertec Guanghui Limited | Private company limited by shares | Live |
| MASTERTEC INVESTMENTS LIMITED | Private company limited by shares | Live |
| MASTERTEC TECHNOLOGY (HOLDING) COMPANY LIMITED | Private company limited by shares | Live |
| M21 MASTERTECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| MASTERTECH ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MASTERTECH OFFICE AUTOMATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| MASTER-TECH SYSTEM LIMITED | Private company limited by shares | Live |