| SING'S COMPANY LIMITED | Private company limited by shares | Live |
| Win Sing's Company Limited | Private company limited by shares | Live |
| SING'S REFRIGERATION ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINGS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Sing's Production Company Limited | Private company limited by shares | Live |
| RICHIE SINGS LIMITED | Private company limited by shares | Dissolved |
| SINGS TRADING AND COMPANY LIMITED | Private company limited by shares | Live |
| SINGS WORLD LIMITED | Private company limited by shares | Live |
| SINGSAI GWOKJAM TRADING LIMITED | Private company limited by shares | Live |
| SINGSAM COMPANY LIMITED | Private company limited by shares | Dissolved |
| Singseng Technology Co., Limited | Private company limited by shares | Live |
| HONG KONG SINGSHJAY GROUP GARMENTS LIMITED | Private company limited by shares | Dissolved |
| SING-SIGNET LIMITED | Private company limited by shares | Live |
| Singsin Company Limited | Private company limited by shares | Live |
| SINGSING ASIA LIMITED | | Live |
| SingSing English Company Limited | Private company limited by shares | Live |
| SINGSINGKIDS COMPANY LIMITED | | Live |
| SINGSON ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SINGSON RUBBER INDUSTRIAL GROUP CO., LIMITED | Private company limited by shares | Live |
| SINGSOU CO., LIMITED | | Live |
| SINGSTAR (HK) COMPANY LIMITED | Private company limited by shares | Live |
| SINGSTAR TECHNOLOGY LIMITED | | Live |
| SINGSTAR ELECTRONIC TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SINGSTAR TECHNOLOGY (INTERNATIONAL) TRADING LIMITED | Private company limited by shares | Live |
| TAK SING-STEELS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINGSUN COMPANY LIMITED | Private company limited by shares | Live |
| SINGSUN TRADE CO., LIMITED | Private company limited by shares | Live |
| Singsunled Co., Limited | Private company limited by shares | Live |