| Hong Sing Electronics (Hong Kong) Limited | Private company limited by shares | Live |
| HONG KONG WAH SING ELECTRONICS COMPANY LIMITED | Private company limited by shares | Live |
| SING FAI HONG ENGINEERING LIMITED | Private company limited by shares | Live |
| Hong Sing Engineering Limited | Private company limited by shares | Live |
| HONG SING CONSTRUCT ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| SING FAI (HONG KONG) ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG KIN SING ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| TAT SING (HONG KONG) ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| NEW SING (HONG KONG) ENGINEERING LIMITED | Private company limited by shares | Live |
| HONG KONG WAH SING ENGINEERING LIMITED | Private company limited by shares | Live |
| YAT SING (HONG KONG) ENGINEERING CO LIMITED | | Live |
| HONG SING ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| TUNG SING (HONG KONG) ENTERPRISE COMPANY LIMITED | Private company limited by shares | Live |
| YAT SING HONG ENTERPRISES LIMITED | Private company limited by shares | Live |
| HONG KONG SUN SING CITY ENTERTAINMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG DAH SING ENTERTAINMENT CORP LIMITED | Private company limited by shares | Live |
| HONG KONG KIN SING EVER GROUP LIMITED | Private company limited by shares | Dissolved |
| SING LEE HONG IMPORT & EXPORT COMPANY LIMITED | Private company limited by shares | Live |
| TAK SING HONG INTERNATIONAL EXPORTERS LIMITED | Private company limited by shares | Dissolved |
| SING FAIR HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HONG KONG MAN SING FINANCIAL LIMITED | Private company limited by shares | Live |
| FULL SING HONG LIMITED | Private company limited by shares | Dissolved |
| Ging Sing (Hong Kong) Limited | Private company limited by shares | Live |
| HONG KONG LO SI SING GOLDSMITH COMPANY, LIMITED | Private company limited by shares | Dissolved |
| HONG KONG PAK SING BUSINESS GROUP LIMITED | Private company limited by shares | Dissolved |
| TAK SING GROUP (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Sing Win Group Co., Limited | | Live |
| Hong Kong Wui Sing Group Investment Company Limited | Private company limited by shares | Live |
| Hong Kong Juk Sing Group Limited | Private company limited by shares | Live |
| HONG KONG FU SING GROUP LIMITED | Private company limited by shares | Live |
| HONG KONG SING YU GROUP LIMITED | Private company limited by shares | Live |
| HONG KONG DAK GWAN SING SAI LIMITED | Private company limited by shares | Live |
| GWONG SING (HONG KONG) ENGINEERING LIMITED | | Live |
| HANG SING HONG LIMITED | Private company limited by shares | Dissolved |
| HANG SING HONG GROUP LIMITED | Private company limited by shares | Live |
| HONG KONG HANG SING GROUP LIMITED | Private company limited by shares | Live |
| HANG SING (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HANG SING HONG KONG COMPANY LIMITED | Private company limited by shares | Live |
| HANG SING (HONG KONG) PHARMACEUTICAL LIMITED | Private company limited by shares | Live |
| Hong Sing Health Limited | | Live |
| HONG KONG SING HING LUNG LIMITED | Private company limited by shares | Live |
| SING HONG (H.K.) LIMITED | Private company limited by shares | Dissolved |
| HONG SING (H.K.) CO. LIMITED | Private company limited by shares | Live |
| Sing Hong Biotech (HK) Limited | Private company limited by shares | Dissolved |
| Hong Kong Chung Sing Holding Limited | Private company limited by shares | Live |
| YAT SING HONG INDUSTRIAL LIMITED | Private company limited by shares | Live |
| HONG KONG HANG SING INDUSTRIAL LIMITED | Private company limited by shares | Live |
| HANG SING (HONG KONG) INDUSTRIAL LIMITED | Private company limited by shares | Live |
| TAI SING INDUSTRIAL (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SING FAI INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| WAH SING INDUSTRIAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| TAK SING HONG KONG INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| SUN SING INDUSTRIAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| WAH SING (HONG KONG) INDUSTRIAL LIMITED | Private company limited by shares | Live |
| HONG KONG SING YI INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SING TIN INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| SING FAI INDUSTRIAL HONG KONG COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG NAM SING INDUSTRIAL LIMITED | Private company limited by shares | Live |
| HONG KONG HOP SING INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| Hong Kong Chi Sing Industrial Limited | Private company limited by shares | Live |
| HONG KONG SING DAK INDUSTRIAL LIMITED | | Live |
| Hong Kong Tung Sing Industrial Company Limited | | Live |
| TIN SING HONG INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HONG SING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Sun Sing Hong International Limited | Private company limited by shares | Live |
| HONG KONG TIN SING FOK INT'L TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HONG SING INVESTMENT LIMITED | Private company limited by shares | Live |
| DAH SING WAH INVESTMENT (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SING FAI INVESTMENT (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SING PO INVESTMENT (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SING TIN YEE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SING SUN INVESTMENT HONG KONG LIMITED | Private company limited by shares | Live |
| FAI SING HONG KONG INVESTMENT LIMITED | Private company limited by shares | Live |
| HONG SING INVESTMENT (HONG KONG) LIMITED | Private company limited by shares | Live |
| DAH SING INVESTMENTS (HONG KONG) LIMITED | Private company limited by shares | Live |
| SING FAI HONG JEWELLERY LIMITED | Private company limited by shares | Live |
| CHUNG SING HONG JEWELLERY LIMITED | Private company limited by shares | Dissolved |
| KEUNG SING HONG CO. LIMITED | Private company limited by shares | Live |
| HONG KONG KEUNG SING LIMITED | Private company limited by shares | Live |
| DAI SING COMPANY OF HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HONG KONG KAI SING COMPANY LIMITED | Private company limited by shares | Live |
| SING FAI COMPANY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG WAH SING HONG COMPANY LIMITED | Private company limited by shares | Live |
| FAI SING (HONG KONG) LIMITED | Private company limited by shares | Live |
| WAH SING (HONG KONG) LIMITED | Private company limited by shares | Live |
| YIP SING (HONG KONG) LIMITED | Private company limited by shares | Live |
| KAH SING (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG SAN SING LIMITED | Private company limited by shares | Dissolved |
| SING YU (HONG KONG) LIMITED | Private company limited by shares | Live |
| SING KIT (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| Sing Hoi Hong Kong Limited | Private company limited by shares | Live |
| HOI SING (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG CHI SING LIMITED | Private company limited by shares | Live |
| HONG KONG SING YAM COMPANY LIMITED | Private company limited by shares | Live |
| Hong Kong Sum Sing Limited | Private company limited by shares | Live |
| Hong Kong Zag Sing Limited | Private company limited by shares | Live |
| YIU SING HONG KONG LIMITED | Private company limited by shares | Live |
| New Sing Tak Hong Kong Company Limited | Private company limited by shares | Live |
| BO SING (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| Sing Lee Hong Kong Limited | Private company limited by shares | Live |