| OTTA LIMITED | Private company limited by shares | Dissolved |
| OTTA TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| OTTACA INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| OTTALAND COMPANY LIMITED | Private company limited by shares | Dissolved |
| Jiangmen Ottanta Otto Faucet Co., Limited | Private company limited by shares | Live |
| Ottanta Hardware (HK) Limited | Private company limited by shares | Live |
| OTTANTA OTTO LIMITED | Private company limited by shares | Live |
| OTTAR INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| OTTAWA FUR COMPANY LIMITED | Private company limited by shares | Live |
| OTTAWA COMPANY LIMITED | Private company limited by shares | Dissolved |
| OTTAX LIMITED | Private company limited by shares | Live |