| GREATECH LIMITED | Private company limited by shares | Live |
| GREATECH CORPORATION LIMITED | Private company limited by shares | Live |
| GREATECH CREATION LIMITED | Private company limited by shares | Live |
| GREATECH ELECTRONIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| GREATECH ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| GREATECH ELECTRONICS (HK) LIMITED | Private company limited by shares | Dissolved |
| GREATECH ELECTRONICS INDUSTRIAL (HK) LIMITED | Private company limited by shares | Dissolved |
| GREATECH ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| GREATECH ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| GREATECH ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| Greatech Group Limited | | Live |
| GREATECH HIGH-TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| GREATECH AUTOMATION (HK) LIMITED | Private company limited by shares | Dissolved |
| GREATECH (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| Greatech (Hong Kong) Limited | Private company limited by shares | Live |
| GREATECH INDUSTRIAL LIMITED | Private company limited by shares | Live |
| Greatech Precision Industrial HongKong Limited | Private company limited by shares | Live |
| GREATECH INDUSTRY LIMITED | Private company limited by shares | Dissolved |
| GREATECH INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| GREATECH INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| GREATECH INTERNATIONAL LIMITED | Private company limited by shares | Live |
| GREATECH INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| GREATECH INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| GREATECH NONWOVEN (HK) LIMITED | Private company limited by shares | Live |
| NEW GREATECH NONWOVEN (HK) LIMITED | Private company limited by shares | Live |
| GREATECH REINFORED PRODUCT LIMITED | Private company limited by shares | Dissolved |
| GREATECH REALTY LIMITED | Private company limited by shares | Dissolved |
| GREATECH SUBSTRATES (HONGKONG) COMPANY LIMITED | | Live |
| Greatech Technology Company Limited | Private company limited by shares | Live |
| GREATECH SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Live |
| GREATECH TRADING CO., LIMITED | Private company limited by shares | Live |
| Greatech Welding Company Limited | Private company limited by shares | Live |
| GREATECHNICS LIMITED | Private company limited by shares | Dissolved |