| AQUATECH LIMITED | Private company limited by shares | Dissolved |
| EP AQUATECH LIMITED | Private company limited by shares | Dissolved |
| AQUATECH PRO LIMITED | Private company limited by shares | Live |
| Aquatech Limited | | Live |
| Aquatech Asia Limited | Private company limited by shares | Live |
| C.I.H. AQUATECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| Aquatech Machinery (Qingdao) Co., Limited | | Live |
| AQUATECH SANITARYWARE CO., LIMITED | Private company limited by shares | Live |
| Aquatech Solutions Co., Limited | Private company limited by shares | Live |
| STANDARD AQUATECH CO., LIMITED | Private company limited by shares | Dissolved |
| AQUATECH CONSULTING LIMITED | Private company limited by shares | Dissolved |
| SINO-EURO AQUATECH DEVELOPMENT HOLDING LIMITED | Private company limited by shares | Dissolved |
| AQUATECH ENGINEERING LIMITED | Private company limited by shares | Live |
| AQUATECH ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| AQUATECH ENVIRONMENTAL TECHNOLOGY LIMITED | | Live |
| KONG FUNG AQUATECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| GREENY AQUATECH LIMITED | Private company limited by shares | Dissolved |
| AQUATECH GROUP LIMITED | Private company limited by shares | Live |
| AQUATECH (HK) WATER TREATMENT LIMITED | Private company limited by shares | Live |
| AQUATECH (HONG KONG) LIMITED | Private company limited by shares | Live |
| AQUATECH SPECIALITY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| SPRINT AQUATECH HONGKONG LIMITED | Private company limited by shares | Live |
| AQUA-TECH INDUSTRIAL LIMITED | Private company limited by shares | Live |
| AQUATECH AG INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Aquatech International Limited | Private company limited by shares | Live |
| AQUATECH INTERNATIONAL INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| AQUATECH INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| AQUATECH INVESTMENT LIMITED | Private company limited by shares | Live |
| Zenith Leidenford AquaTech Company Limited | | Live |
| AQUATECH PRODUCTS H. K. LIMITED | Private company limited by shares | Dissolved |
| AQUATECH HK PVT. LIMITED | Private company limited by shares | Live |
| AQUATECH SERVICES LIMITED | Private company limited by shares | Dissolved |
| AQUATECH SUPPLIES LIMITED | Private company limited by shares | Live |
| Tennichi Aquatech Limited | | Live |
| AQUATECH TRADING LIMITED | Private company limited by shares | Live |
| AQUATECHNIC (HONG KONG) LIMITED | Private company limited by shares | Dissolved |