| HK B.Y.D LIMITED | Private company limited by shares | Live |
| B.Y.D Game Limited | | Live |
| Bydalink Technology Limited | Private company limited by shares | Live |
| BYDAND LIMITED | Private company limited by shares | Live |
| BYDELL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| BYDELL SERVICES (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| BY-DESIGNERS LIMITED | Private company limited by shares | Live |
| BYDICAM LIMITED | Private company limited by shares | Live |
| BYDICK LIMITED | Private company limited by shares | Live |
| BYDPETE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| byD:sign Limited | Private company limited by shares | Live |