| PLASTEC (H K) LIMITED | Private company limited by shares | Dissolved |
| K&W PLASTEC LIMITED | Private company limited by shares | Live |
| IMG Plastec Co., Limited | Private company limited by shares | Live |
| R.C. Mannesmann PlasTec Limited | Private company limited by shares | Live |
| PLASTECH LIMITED | Private company limited by shares | Dissolved |
| PLASTECH LIMITED | Private company limited by shares | Live |
| PLASTECH ASIA LIMITED | Private company limited by shares | Live |
| PLASTECH CENTRE LIMITED | Private company limited by shares | Dissolved |
| PHARMATES PLASTECH LIMITED | Private company limited by shares | Live |
| SMARGON PLASTECH (HK) CO., LIMITED | Private company limited by shares | Live |
| PLASTECHE (CHINA) COMPANY LIMITED | Private company limited by shares | Dissolved |