| THREE KEYO LIMITED | Private company limited by shares | Dissolved |
| KEYOKIN ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| Keyomics Laboratories (HK) Limited | Private company limited by shares | Live |
| KEYON (CHINA) LIMITED | Private company limited by shares | Live |
| Keyon Trade Co., Limited | Private company limited by shares | Live |
| KEYON REALTY COMPANY LIMITED | Private company limited by shares | Live |
| KEYON OFFICE RENTAL LIMITED | Private company limited by shares | Dissolved |
| Keyond Group Limited | | Live |
| KEYONE CO., LIMITED | Private company limited by shares | Live |
| KEYONE INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| KEYONE ENTERPRISE LIMITED | Private company limited by shares | Live |
| KEYONE INDUSTRIAL LIMITED | Private company limited by shares | Live |
| KEYOSHA LIMITED | Private company limited by shares | Live |
| KEYOTA TRADING LIMITED | Private company limited by shares | Live |
| KEYOU LIMITED | Private company limited by shares | Dissolved |
| Keyou Trading Co., Limited | | Live |
| Guangyuan Keyou Technology Development (Hong Kong) Co., Limited | | Live |
| HONGKONG KEYOU INTERNATIONAL MEDICAL SERVICE LIMITED | Private company limited by shares | Live |
| H.K KEYOU INDUSTRY LIMITED | Private company limited by shares | Live |
| KEYOU SCI-TECH INFORMATION CONSULTING CO., LIMITED | Private company limited by shares | Live |
| Keyou International Hong Kong Limited | Private company limited by shares | Live |
| KEYOU KELE (HK) INT'L GROUP LIMITED | Private company limited by shares | Dissolved |
| KEYOU CHINESE SERVICE LIMITED | Private company limited by shares | Dissolved |
| KEYOULY LIMITED | Private company limited by shares | Live |