| GENTEK LIMITED | Private company limited by shares | Dissolved |
| GENTEK CO., LIMITED | Private company limited by shares | Live |
| SHANGHAI GENTEK CORPORATION (HONG KONG) LIMITED | Private company limited by shares | Live |
| GENTEK ENERGY LIMITED | Private company limited by shares | Live |
| GENTEK (HONG KONG) CO., LIMITED | Private company limited by shares | Dissolved |
| GenTek Innovation (Hong Kong) Co., Limited | | Live |
| GENTEK INTERNATIONAL ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| Gen-Tek International (Hong Kong) Limited | Private company limited by shares | Dissolved |