| SING FAI ENGINEERING (TRADING) LIMITED | Private company limited by shares | Dissolved |
| YAT SING TRADING ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| Sing Win Engineering Trading Limited | Private company limited by shares | Live |
| Fai Sing Engineering & Trading Limited | Private company limited by shares | Live |
| Fu Sing Engineering Trading Co. Limited | | Live |
| Yiu Sing Transportation Engineering Co Limited | Private company limited by shares | Live |
| MING SING TRANSPORTATION & ENGINEERING LIMITED | Private company limited by shares | Live |
| TUNG SING ENGINEERING CO. LIMITED | Private company limited by shares | Live |
| TUNG SING ENGINEERING (HONG KONG) LIMITED | Private company limited by shares | Live |
| TUNG SING STRUCTURAL ENGINEERING LIMITED | Private company limited by shares | Live |
| Tusen Sing Engineering Company Limited | | Live |
| WANG SING ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| Wang Sing Engineering Company Limited | Private company limited by shares | Dissolved |
| Wang Sing Air-Condition Engineering Limited | | Live |
| Wang Sing Engineering (International) Limited | | Live |
| WING SING KITCHEN WARES ENGINEERING LIMITED | Private company limited by shares | Live |
| YUK SING WATERPROOFING ENGINEERING LIMITED | Private company limited by shares | Live |
| WELL SING ENGINEERING LIMITED | Private company limited by shares | Live |
| SAN SING WELL ENGINEERING COMPANY LIMITED | | Live |
| WING SING ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| Wing Sing Engineering Limited | Private company limited by shares | Live |
| Wing Sing Li Engineering Limited | | Live |
| Wing Sing Engineering Company Limited | | Live |
| WING SING AIR-CONDITION ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| WING SING ENGINEERING (ASIA) LIMITED | Private company limited by shares | Live |
| WING SING (H.K.) ENGINEERING LIMITED | Private company limited by shares | Live |
| WING SING ENGINEERING (HK) LIMITED | | Live |
| SING WONG ENGINEERING LIMITED | | Live |
| SING YEUNG ENGINEERING LIMITED | Private company limited by shares | Live |
| Sing Yeung Technology Engineering Limited | | Live |
| Sing Ying Air-Condition Engineering Limited | | Live |
| Yuan Sing air conditioning engineering company Limited | | Live |
| WAI SING ENIERPRISES HK LIMITED | Private company limited by shares | Dissolved |
| VEE SING ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| WOO SING KEE ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| SING WAN ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| TAI SING ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| YEE SING ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| SING FOK ENTERPRISE COMPANY LIMITED | Private company limited by shares | Live |
| KAM SING ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| YEE SING ENTERPRISE COMPANY LIMITED | Private company limited by shares | Dissolved |
| YU SING ENTERPRISE LIMITED | Private company limited by shares | Live |
| PAN SING ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| MA SING ENTERPRISE LIMITED | Private company limited by shares | Live |
| VEE SING ENTERPRISE LIMITED | Private company limited by shares | Live |
| WIN SING ENTERPRISE LIMITED | Private company limited by shares | Live |
| Lin Sing Enterprise Limited | Private company limited by shares | Live |
| Yuk Sing Enterprise Limited | Private company limited by shares | Live |
| Yat Sing Enterprise Limited | Private company limited by shares | Live |
| KI SING ENTERPRISE LIMITED | | Live |
| Sing Lei Enterprise Limited | | Live |
| CHUNG SING INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| PAK SING DYNASTY ENTERPRISE LIMITED | Private company limited by shares | Live |
| FOOK SING ENTERPRISE LIMITED | Private company limited by shares | Live |
| HANG SING (INTERNATIONAL) ENTERPRISE COMPANY LIMITED | Private company limited by shares | Dissolved |
| HOI SING INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| NAM SING INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| YAT SING INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| WAH SING INTERNATIONAL INVESTMENT ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| KONG SING ENTERPRISE LIMITED | Private company limited by shares | Live |
| SHIN HO SING OCEAN ENTERPRISE COMPANY LIMITED | Private company limited by shares | Dissolved |
| WA SING YUEN ENTERPRISE LIMITED | Private company limited by shares | Live |
| YUNG SING ENTERPRISE LIMITED | Private company limited by shares | Live |
| YIN SING ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SING POK ENTERPRISES LIMITED | Private company limited by shares | Live |
| WUI SING ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SING TAT LEE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| BEN SING ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| HWA SING ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| YAT SING ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| DIP SING ENTERPRISES COMPANY LIMITED | Private company limited by shares | Live |
| KI SING ENTERPRISES COMPANY LIMITED | Private company limited by shares | Live |
| JAN SING ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| NAN SING ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| KAR SING ENTERPRISES LIMITED | Private company limited by shares | Live |
| MAU SING ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| YUE SING ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| YEE SING ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| YUE SING ENTERPRISES LIMITED | Private company limited by shares | Live |
| SING HEI ENTERPRISES COMPANY LIMITED | | Live |
| SING GUAN ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SING WAH INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| KAM SING INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| KONG SING INVESTMENTS & ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| SING KWONG KAY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SING KWONG LEE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| KWUN SING ENTERPRISES LIMITED | Private company limited by shares | Live |
| NA Sing Sing Entertainment Limited | Private company limited by shares | Live |
| SUN SING ENTERTAINMENT COMPANY LIMITED | Private company limited by shares | Live |
| Fu Sing Entertainment Limited | Private company limited by shares | Live |
| SING INTERNATIONAL ENTERTAINMENT LIMITED | Private company limited by shares | Live |
| WUI SING CATERING ENTERTAINMENT MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| SING YU INTERNATIONAL ENVIRONMENTAL LIMITED | | Live |
| SHUI SING ENVIRONMENTAL COMPANY LIMITED | Private company limited by shares | Live |
| MEE SING EQUIPMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| WAI SING EQUIPMENT COMPANY LIMITED | Private company limited by shares | Live |
| HOI SING EQUIPMENTS COMPANY LIMITED | Private company limited by shares | Live |
| WAH SING EQUIPMENTS COMPANY LIMITED | Private company limited by shares | Live |
| KO SING FORMWORK ERECTION LIMITED | Private company limited by shares | Live |
| YET SING ESTATE COMPANY, LIMITED | Private company limited by shares | Dissolved |