| YAT SING EDUCATION LIMITED | Private company limited by shares | Live |
| Sing Kong Expertise Education & Immigration Company Limited | Private company limited by shares | Live |
| NGAI SING EDUCATION LIMITED | Private company limited by shares | Live |
| LAP SING EDUCATIONAL CHARITY FUNDING LIMITED | Company limited by guarantee | Live |
| SZE CHI SING EDUCATIONAL ORGANISATION LIMITED | Company limited by guarantee | Live |
| SING TAO EDUCATIONAL PUBLICATIONS LIMITED | Private company limited by shares | Live Commenced dormancy on 08-Apr-2014 |
| FAI SING ELECTRIC COMPANY, LIMITED | Private company limited by shares | Dissolved |
| SING FAI ELECTRIC COMPANY LIMITED | Private company limited by shares | Live |
| PO SING ELECTRIC COMPANY LIMITED | Private company limited by shares | Live |
| HOI SING ELECTRICAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| SING FAI ELECTRICAL CO. LIMITED | Private company limited by shares | Live |
| SING WAI ELECTRICAL DOMESTIC APPLIANCES LIMITED | Private company limited by shares | Dissolved |
| LOK SING ELECTRICAL (CHINA) LIMITED | Private company limited by shares | Live |
| Chung Sing Electrical Co. Limited | Private company limited by shares | Live |
| YAT SING ELECTRICAL (H.K.) CO., LIMITED | Private company limited by shares | Dissolved |
| SING KWONG ELECTRICAL CO., LIMITED | Private company limited by shares | Live |
| SING HING ELECTRICAL MANUFACTURERS LIMITED | Private company limited by shares | Dissolved |
| KAM SING ELECTRICAL SUPPLY COMPANY, LIMITED -THE- | Private company limited by shares | Dissolved |
| ZUNG ON SING ELECTRICAL LIMITED | | Live |
| WAN HAN SING ELECTRONIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| WAH SING ELECTRONIC COMPANY LIMITED | Private company limited by shares | Live |
| FUK SING ELECTRONIC COMPANY LIMITED | Private company limited by shares | Live |
| PO SING ELECTRONIC LIMITED | Private company limited by shares | Dissolved |
| Lok Sing Electronic Limited | Private company limited by shares | Dissolved |
| LIK SING ELECTRONIC CO., LIMITED | Private company limited by shares | Dissolved |
| SING KAM ELECTRONIC (HK) CO., LIMITED | Private company limited by shares | Live |
| KIN SING ELECTRONIC (HK) LIMITED | Private company limited by shares | Dissolved |
| HUA SING ELECTRONIC (HK) LIMITED | Private company limited by shares | Dissolved |
| TAK SING ELECTRONIC METAL EQUIPMENTS LIMITED | Private company limited by shares | Live |
| NINGBO SING KONG ELECTRONIC (HK) LIMITED | Private company limited by shares | Dissolved |
| TAI SING ELECTRONIC PRODUCTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| WANG SING ELECTRONIC (INTERNATIONAL) LIMITED | Private company limited by shares | Dissolved |
| WING SING ELECTRONIC INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Wing Sing International Electronic Limited | Private company limited by shares | Live |
| PO SING ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| TAT SING ELECTRONICS COMPANY LIMITED | Private company limited by shares | Live |
| NAN SING ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| FU SING ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SING FAI ELECTRONICS COMPANY LIMITED | Private company limited by shares | Live |
| TAI SING ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SING TAI ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| SING SUN ELECTRONICS LIMITED | Private company limited by shares | Live |
| YI SING ELECTRONICS CO., LIMITED | Private company limited by shares | Dissolved |
| SING LEE ELECTRONICS (GROUP) LIMITED | Private company limited by shares | Dissolved |
| HANG SING ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| KAM SING ELECTRONICS (HK) LIMITED | Private company limited by shares | Dissolved |
| CIU SING ELECTRONICS (HK) LIMITED | Private company limited by shares | Dissolved |
| SING YIU ELECTRONICS (HONG KONG) CO. LIMITED | Private company limited by shares | Dissolved |
| DAI SING ELECTRONICS (HONGKONG) LIMITED | Private company limited by shares | Live |
| SING FAI ELECTRONICS INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| SING FAIR INDUSTRIAL (ELECTRONICS) LIMITED | Private company limited by shares | Dissolved |
| KENG SING ELECTRONICS INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| MING SING ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| SING TAK ELECTRONICS TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SING WO ELECTRONICS TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| LEE SING ELECTRONICS TRADING LIMITED | Private company limited by shares | Live |
| WELL SING ELECTRONICS CO. LIMITED | Private company limited by shares | Dissolved |
| WING SING ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| WING SING ELECTRONICS HONGKONG LIMITED | Private company limited by shares | Live |
| WAH YING SING DIGITAL ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNG SING ELECTROPLATE FACTORY LIMITED | Private company limited by shares | Live |
| NAM SING ELECTRO-PLATING LIMITED | Private company limited by shares | Dissolved |
| SING TEC ELEVATOR LIMITED | Private company limited by shares | Live |
| SING EMPIRE LIMITED | Private company limited by shares | Live |
| PO SING EMPLOYMENT SERVICE CENTRE LIMITED | Private company limited by shares | Live |
| Wing Sing Energy Group Limited | Private company limited by shares | Live |
| HK HANG SING (INTERNATIONAL) ENERGY LIMITED | Private company limited by shares | Live |
| HANG SING RENEWABLE ENERGY LIMITED | Private company limited by shares | Live |
| Yuk Sing Light Energy Company Limited | Private company limited by shares | Live |
| WING SING NEW ENERGY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| WING SING ENERGY COMPANY LIMITED | Private company limited by shares | Live |
| TAI SING ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Po Sin Sing Kee Engineering Company Limited | Private company limited by shares | Live |
| WAH HA SING KEE ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| U. SING ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| TAK SING ENGINEERING LIMITED | Private company limited by shares | Live |
| SUN SING ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| KIM SING ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| KO SING ENGINEERING LIMITED | Private company limited by shares | Live |
| YUE SING ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| SING TAI ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| FAI SING ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| WAI SING ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| SING & FAT ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SING LEE ENGINEERING LIMITED | Private company limited by shares | Live |
| FOK SING FAI ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WAH SING ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| PO SING E & M ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| SING TAT ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| YIK SING ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| SING WA ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| PO SING ENGINEERING LIMITED | Private company limited by shares | Live |
| PAK SING ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| HO SING ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| YET SING ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| SUI SING ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WAI SING ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| YAT SING ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| YIU SING ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SING FAI E & M ENGINEERING CO. LIMITED | Private company limited by shares | Live |