| CONTECH LIMITED | Private company limited by shares | Dissolved |
| CONTECH HK LIMITED | Private company limited by shares | Live |
| CONTECH LAB LIMITED | Private company limited by shares | Live |
| Dickson ConTech Limited | Private company limited by shares | Live |
| DRAGON CONTECH LIMITED | Private company limited by shares | Dissolved |
| CONTECH ENTERPRISES LIMITED | Private company limited by shares | Live |
| ConTECH E-son Limited | Private company limited by shares | Live |
| CONTECH GROUP LIMITED | Private company limited by shares | Dissolved |
| CONTECH ENTERPRISE GROUP (U.S.A.) LIMITED | Private company limited by shares | Dissolved |
| CONTECH HOLDING COMPANY LIMITED | Private company limited by shares | Live |
| CONTECH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Contech Leca Company Limited | Private company limited by shares | Dissolved |
| Con-Tech Lighting Asia Limited | Private company limited by shares | Live |
| CONTECH MILLWORK LIMITED | Private company limited by shares | Dissolved |
| CONTECH ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| ConTech pOint Company Limited | Private company limited by shares | Live |
| CONTECH REINFORCEMENT LIMITED | Private company limited by shares | Dissolved |
| CONTECH SHIPPING LIMITED | Private company limited by shares | Dissolved |
| CONTECH SOLUTIONS LIMITED | Private company limited by shares | Live |
| CONTECH TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| CONTECH TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CONTECH TRADING CO. LIMITED | Private company limited by shares | Dissolved |
| WILTSHIER CONTECH LIMITED | Private company limited by shares | Dissolved |