| KEY SIGNATURE COMPANY LIMITED | Private company limited by shares | Dissolved |
| SIGNATURE LIMITED | Private company limited by shares | Live |
| SIGNATURE COMPANY LIMITED -THE- | Private company limited by shares | Dissolved |
| SIGNATURE I & D LIMITED | Private company limited by shares | Dissolved |
| LC SIGNATURE LIMITED | Private company limited by shares | Dissolved |
| WAN SIGNATURE COMPANY LIMITED | Private company limited by shares | Live |
| D18 SIGNATURE LIMITED | Private company limited by shares | Live |
| V.T SIGNATURE LIMITED | Private company limited by shares | Live |
| V Signature Limited | Private company limited by shares | Live |
| NEW SIGNATURE LIMITED | Private company limited by shares | Live |
| Signature IP Limited | | Live |
| Queens Signature Co., Limited | Private company limited by shares | Live |
| SignaturePrint International Limited | Private company limited by shares | Live |
| DEER GARDEN SIGNATURES LIMITED | Private company limited by shares | Live |
| Signature-Search (HK) Limited | Private company limited by shares | Dissolved |