| D-Tomato Limited | Private company limited by shares | Live |
| DTONE LIMITED | Private company limited by shares | Dissolved |
| D-TOP (H.K.) ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| Hong Kong DTOP DATA Co., Limited | | Live |
| DTOP (Hong Kong) Company Limited | Private company limited by shares | Live |
| DTOS COMPANY LIMITED | Private company limited by shares | Dissolved |
| DTOW LIMITED | Private company limited by shares | Live |
| D-TOWER LIMITED | Private company limited by shares | Dissolved |
| DTOX THERAPY LIMITED | Private company limited by shares | Live |