| C. I. WELTEC COMPANY LIMITED | Private company limited by shares | Dissolved |
| Weltec Limited | Private company limited by shares | Live |
| WELTEC ELECTRONICS CO., LIMITED | Private company limited by shares | Dissolved |
| WELTEC BC TRADE CO., LIMITED | Private company limited by shares | Live |
| WELTEC TRADING LIMITED | Private company limited by shares | Dissolved |
| WELTECH LIMITED | Private company limited by shares | Dissolved |
| WELTECH LIMITED | Private company limited by shares | Live |
| WELTECH ASIA LIMITED | Private company limited by shares | Live |
| WELTECH ENTERPRISE LIMITED | Private company limited by shares | Dissolved |