| ITALY OUKAI LOCOMOTIVE DEVELOP CO., LIMITED | Private company limited by shares | Dissolved |
| GERMANY OUKAI ELECTROMOTION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| OUKAI TRADE LIMITED | Private company limited by shares | Live |
| SHANGHAI OUKAIDA (GROUP) AUTOMOBILE MAINTENANCE EQUIPMENT LIMITED | Private company limited by shares | Live |
| HONG KONG OUKAIDENUO INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| OUKAISITE INDUSTRY (INTERNATIONAL) LIMITED | Private company limited by shares | Live |
| OUKAIYA TRADING CO., LIMITED | | Live |