| SING YIP TOYS MANUFACTORY LIMITED | Private company limited by shares | Live |
| FINE SING GARMENT MANUFACTURER LIMITED | Private company limited by shares | Dissolved |
| YIK SING INTERNATIONAL MANUFACTURER LIMITED | Private company limited by shares | Live |
| KAM SING MANUFACTURING COMPANY, LIMITED | Private company limited by shares | Live |
| YIP SING MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| GALAXY SING PCB MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| SING MEI GARMENT MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SING FAI GARMENT MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| TIN SING GARMENT MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| HANG SING MANUFACTURING (H.K.) LIMITED | Private company limited by shares | Live |
| YAT SING LEATHERGOODS MANUFACTURING COMPANY LIMITED | Private company limited by shares | Live |
| SUN SING COPPER AND METAL MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| SING YUEN METAL MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| KIN LAG SING PLASTIC MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNG SING MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WAH SING WATCH MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| FOOK SING WATCH PRODUCTS MANUFACTURING COMPANY LIMITED | Private company limited by shares | Live |
| MARBLE SING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SING FAI MARBLE COMPANY LIMITED | Private company limited by shares | Live |
| KAM SING MARBLE COMPANY LIMITED | Private company limited by shares | Live |
| SING YOUNG INTERNATIONAL MARINE LIMITED | Private company limited by shares | Dissolved |
| SING MARK LIMITED | Private company limited by shares | Dissolved |
| WING SING MASONRY ENGINEERING LIMITED | Private company limited by shares | Live |
| Master Sing Studio Limited | Private company limited by shares | Live |
| MASTER WING SING CHARITY FUND LIMITED | Company limited by guarantee | Live |
| KIN SING MATERIAL LIMITED | Private company limited by shares | Live |
| Yat Sing Material Co., Limited | Private company limited by shares | Live |
| SING FAI PLASTIC MATERIAL CO., LIMITED | Private company limited by shares | Dissolved |
| SUN SING CONS MATERIAL CO. LIMITED | Private company limited by shares | Live |
| HOP SING CONSTRUCTION MATERIAL CO., LIMITED | Private company limited by shares | Live |
| SING LONG PLASTIC MATERIAL FACTORY LIMITED | Private company limited by shares | Dissolved |
| HANG SING SHOE MATERIAL ENTERPRISE COMPANY LIMITED | Private company limited by shares | Dissolved |
| PAK SING SHOE MATERIAL (H.K.) LIMITED | Private company limited by shares | Live |
| PAK SING SHOE MATERIAL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| LEE SING MATERIALS COMPANY LIMITED | Private company limited by shares | Live |
| YUN SING MATERIALS LIMITED | Private company limited by shares | Dissolved |
| SING CHI SING PLASTIC MATERIALS METAL (HK) COMPANY LIMITED | Private company limited by shares | Live |
| CHI SING MECHANICAL LIMITED | Private company limited by shares | Live |
| Jun Sing Media Limited | Private company limited by shares | Live |
| YAT SING MEDICAL COMPANY LIMITED | Private company limited by shares | Live |
| FU SING MEDICAL LIMITED | Private company limited by shares | Live |
| YIU SING MEDICAL COMPANY LIMITED | Private company limited by shares | Live |
| SING CHI MEDICAL COMPANY LIMITED | Private company limited by shares | Live |
| SUN SING MEDICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| WAN SING MEDICAL SUPPLIES COMPANY LIMITED | Private company limited by shares | Live |
| Tung Sing Medical Limited | Private company limited by shares | Live |
| WANG SING MEDICAL BEAUTY CENTRE LIMITED | Private company limited by shares | Dissolved |
| Lung Sing Authentic Medicines Company Limited | | Live |
| TAK SING TONG MEDICINES LIMITED | Private company limited by shares | Live |
| LUNG SING ZHENG MEDICINES LIMITED | Private company limited by shares | Live |
| NG SING HO MEMORIAL LIMITED | Private company limited by shares | Live |
| ERIC AU SING WAI MEMORIAL FUND LIMITED | Company limited by guarantee | Dissolved |
| WANG SING MERCANTILE LIMITED | Private company limited by shares | Live |
| LEE SING METAL LIMITED | Private company limited by shares | Live |
| WAI SING METAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| FU SING METAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| SING MAY METAL ACCESSORIES FACTORY LIMITED | Private company limited by shares | Live |
| WAN SING METAL & ELECTRONIC LIMITED | Private company limited by shares | Dissolved |
| KAM SING METAL ELECTRO-PLATING LIMITED | Private company limited by shares | Dissolved |
| LAP SING METAL FACTORY LIMITED | Private company limited by shares | Live |
| SING CHI SING PLASTIC METAL (HK) COMPANY LIMITED | Private company limited by shares | Live |
| MAY SING METAL MANUFACTORY LIMITED | Private company limited by shares | Live |
| CHI SING METAL MANUFACTORY COMPANY LIMITED | Private company limited by shares | Live |
| TIN SING METAL MANUFACTORY CO LIMITED | Private company limited by shares | Live |
| NAM SING METAL MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| Sing Sing Metal Manufactory Limited | Private company limited by shares | Live |
| CHIT SING METAL MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| SING FAI METAL JEWELLERY MANUFACTORY COMPANY LIMITED | Private company limited by shares | Dissolved |
| SING MING METAL COMPANY LIMITED | Private company limited by shares | Live |
| YUK SING METAL & PLASTIC MFY LIMITED | Private company limited by shares | Live |
| YAT SING PLASTIC METAL LIMITED | Private company limited by shares | Live |
| WAH SING METAL PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| SING PO PLASTIC & METAL PRODUCTS MANUFACTORY LIMITED | Private company limited by shares | Live |
| KAM SING PLASTIC METAL PRODUCTS LIMITED | Private company limited by shares | Live |
| SING KEE METALWARE COMPANY LIMITED | Private company limited by shares | Live |
| HOP SING GARMENT MFG. COMPANY LIMITED | Private company limited by shares | Dissolved |
| MILLION SING LIMITED | Private company limited by shares | Live |
| SING MING COMPANY LIMITED | Private company limited by shares | Dissolved |
| MING SING LIMITED | Private company limited by shares | Dissolved |
| MING SING LIMITED | Private company limited by shares | Live |
| SING MING E & M COMPANY LIMITED | Private company limited by shares | Live |
| Ming Sing Limited | Private company limited by shares | Live |
| SING Model Management Limited | Private company limited by shares | Live |
| WAI SING WOOD MODEL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| HING SING ALUMINUM MOLD LIMITED | Private company limited by shares | Live |
| WUI SING MOLDING LIMITED | Private company limited by shares | Live |
| MONGKOK CHIU KIU YU LAN SING WUI COMPANY LIMITED | Company limited by guarantee | Live |
| MAN SING MOTO LIMITED | Private company limited by shares | Live |
| KO SING MOTOR COMPANY LIMITED | Private company limited by shares | Dissolved |
| WA OU SING MA MOTOR LIMITED | Private company limited by shares | Live |
| GOLD SING MOTOR REPAIR LIMITED | Private company limited by shares | Dissolved |
| SING LEE MOTORS LIMITED | Private company limited by shares | Live |
| WAH SING MOTORS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SING WAI MOTORS LIMITED | Private company limited by shares | Live |
| HIP SING MOTORS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUN SING MOTORS LIMITED | Private company limited by shares | Dissolved |
| SING YAT MOTORS CO LIMITED | Private company limited by shares | Dissolved |
| CHUNG SING MOTORS LIMITED | Private company limited by shares | Live |
| YET SING TYRE & ELECTRIC MOTORS CO. LIMITED | Private company limited by shares | Dissolved |
| Jip Sing Motors Garage Limited | Private company limited by shares | Live |