| SIGN ON LIMITED | Private company limited by shares | Dissolved |
| EXO SIGN COMPANY LIMITED | Private company limited by shares | Dissolved |
| KEY SIGN LIMITED | Private company limited by shares | Dissolved |
| TOP SIGN LIMITED | Private company limited by shares | Dissolved |
| TOP SIGN LIMITED | Private company limited by shares | Dissolved |
| MAX SIGN LIMITED | Private company limited by shares | Dissolved |
| TOP SIGN LIMITED | Private company limited by shares | Dissolved |
| SIGN LIMITED | Private company limited by shares | Live |
| TOP SIGN LIMITED | Private company limited by shares | Dissolved |
| RED SIGN LIMITED | Private company limited by shares | Dissolved |
| SIGN PRO LIMITED | Private company limited by shares | Live |
| Boe Sign Company Limited | Private company limited by shares | Live |
| LU SIGN LIMITED | Private company limited by shares | Live |
| Sign E Limited | Private company limited by shares | Live |
| ACE SIGN LIMITED | Private company limited by shares | Live |
| NEW SIGN LIMITED | Private company limited by shares | Live |
| TOP SIGN LIMITED | | Live |
| ABSOLUTE SIGN ADVERTISING LIMITED -THE- | Private company limited by shares | Dissolved |
| LEE YUEN ADVERTISING SIGN COMPANY LIMITED | Private company limited by shares | Live |
| FIRST SIGN CAPITAL LIMITED | Private company limited by shares | Dissolved |
| LUCK SIGN (CHINA) LIMITED | Private company limited by shares | Live |
| CREATIVE SIGN CO., LIMITED | Private company limited by shares | Live |
| GRAND SIGN DEVELOPMENTS LIMITED | Private company limited by shares | Dissolved |
| JOY DIGITAL SIGN COMPANY LIMITED | Private company limited by shares | Dissolved |
| ELECTROTECH SIGN & DISPLAY LIMITED | Private company limited by shares | Dissolved |
| DRAGON SIGN LIMITED | Private company limited by shares | Dissolved |
| DRAGON SIGN LIMITED | Private company limited by shares | Live |
| DYNASTY SIGN LIMITED | Private company limited by shares | Dissolved |
| EASTERN SIGN LIMITED | Private company limited by shares | Live |
| EUROPEAN SIGN COMPANY LIMITED | Private company limited by shares | Dissolved |
| FIRST SIGN LIMITED | Private company limited by shares | Dissolved |
| FIRST SIGN COMPANY LIMITED | Private company limited by shares | Dissolved |
| GRAND SIGN LIMITED | Private company limited by shares | Dissolved |
| GRAND SIGN LIMITED | Private company limited by shares | Live |
| IMPERIAL SIGN LIMITED | Private company limited by shares | Live |
| FIRST SIGN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| LUCK SIGN INVESTMENT LIMITED | Private company limited by shares | Live |
| CAPITAL SIGN INVESTMENTS LIMITED | Private company limited by shares | Live |
| WEALTHY SIGN INVESTMENTS LIMITED | Private company limited by shares | Live |
| LUCK SIGN LIMITED | Private company limited by shares | Live |
| FIRST SIGN MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| MASCOT SIGN LIMITED | Private company limited by shares | Dissolved |
| INNOVATIVE SIGN MATERIALS LIMITED | Private company limited by shares | Dissolved |
| Ninety-nine Sign Limited | | Live |
| CAPITAL SIGN TRADING LIMITED | Private company limited by shares | Dissolved |
| FIRST SIGN TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| LUCK SIGN TRADING LIMITED | Private company limited by shares | Live |
| WEALTHY SIGN LIMITED | Private company limited by shares | Live |
| WEALTHY SIGN LIMITED | Private company limited by shares | Live |
| WINNING SIGN LIMITED | Private company limited by shares | Dissolved |
| Wisdom Sign Limited | Private company limited by shares | Live |
| SIGNA LIMITED | Private company limited by shares | Dissolved |
| SIGNAAL (CHINA) GROUP CO., LIMITED | Private company limited by shares | Live |
| SUN SIGNAGE LIMITED | Private company limited by shares | Live |
| SIGNAGE LIMITED -THE- | Private company limited by shares | Dissolved |
| HOT SIGNAGE COMPANY LIMITED | Private company limited by shares | Dissolved |
| SIGNAGE PRO LIMITED | Private company limited by shares | Live |
| JH SIGNAGE COMPANY LIMITED | Private company limited by shares | Live |
| CHINA DIGITAL SIGNAGE LIMITED | Private company limited by shares | Live |
| HALITECH TACTILE & SIGNAGE COMPANY LIMITED | Private company limited by shares | Dissolved |
| JET SIGNAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| WIN SIGNAL LIMITED | Private company limited by shares | Dissolved |
| SIGNAL ONE LIMITED | Private company limited by shares | Dissolved |
| SIGNAL TWO LIMITED | Private company limited by shares | Dissolved |
| JET SIGNAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| TOP SIGNAL LIMITED | Private company limited by shares | Dissolved |
| SIGNAL LIMITED | Private company limited by shares | Dissolved |
| SIGNAL HK LIMITED | Private company limited by shares | Live |
| SIGNAL 8 LIMITED | Private company limited by shares | Live |
| Signal IT Limited | Private company limited by shares | Live |
| Buy Signal Limited | Private company limited by shares | Live |
| VIP SIGNAL LIMITED | Private company limited by shares | Live |
| BIG BIG SIGNAL LIMITED | Private company limited by shares | Live |
| SIGNAL LIMITED | Private company limited by shares | Live |
| WIN SIGNAL LIMITED | Private company limited by shares | Live |
| 21 Signal Limited | | Live |
| Signal Ahead Limited | Private company limited by shares | Dissolved |
| ALLIED SIGNAL INVESTMENT LIMITED | Private company limited by shares | Live |
| WIN SIGNAL ASIA LIMITED | Private company limited by shares | Live |
| Signal Audio Engineering Limited | Private company limited by shares | Dissolved |
| SIGNAL ENTERPRISES (AUSTRALIA) LIMITED | Private company limited by shares | Dissolved |
| SIGNAL BEACON LIMITED | Private company limited by shares | Live |
| BEST SIGNAL LIMITED | Private company limited by shares | Live |
| BEST SIGNAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| BEST SIGNAL ONLINE LIMITED | Private company limited by shares | Live |
| Signal 10 Brewers Limited | Private company limited by shares | Live |
| CAPITAL SIGNAL LIMITED | Private company limited by shares | Dissolved |
| SIGNAL HEARING CENTRE LIMITED | Private company limited by shares | Live |
| CHAMPION SIGNAL LIMITED | Private company limited by shares | Dissolved |
| CHINA SIGNAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHINA SIGNAL LIMITED | Private company limited by shares | Live |
| DAILY SIGNAL (CHINA) LIMITED | Private company limited by shares | Dissolved |
| CLOUD SIGNAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| OH SIGNAL CO., LIMITED | Private company limited by shares | Live |
| SIGNAL HOLDING CO., LIMITED | Private company limited by shares | Dissolved |
| POWER & SIGNAL TECHNOLOGIES CO., LIMITED | Private company limited by shares | Live |
| Triumph Signal Co., Limited | | Live |
| Red Signal Computer Co. Limited | Private company limited by shares | Live |
| OMNI SIGNAL CONSULTANCY LIMITED | Private company limited by shares | Live |
| SIGNAL CONSULTING LIMITED | Private company limited by shares | Dissolved |