| KIN LEE STEEL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| On Steel Engineering Limited | Private company limited by shares | Live |
| Y K STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| ON TAT STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Ho Fai Steel Engineering Limited | Private company limited by shares | Live |
| WAH TEN STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| WAI KEE STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| FAT KEE STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| PO LEE STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| YUK FAI STEEL ENGINEERING LIMITED | | Live |
| MAX Steel Engineering Company Limited | | Live |
| Advanced Steel Engineering Company Limited | Private company limited by shares | Live |
| TAI WAI ALUMINUM STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| ARTGOOD STEEL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| GOLD ASCENT STEEL STRUCTURE ENGINEERING LIMITED | Private company limited by shares | Live |
| A-TAT STEEL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| BAISHUN STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| CALLY STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| CHINA ARCHITECTURE STEEL STRUCTURE ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| CHINA ARCHITECTURE STEEL STRUCTURE ENGINEERING LIMITED | Private company limited by shares | Live |
| WAH CHONG STEEL STRUCTURE ENGINEERING LIMITED | | Live |
| HO WAH STEEL ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| HOI KEE STEEL & ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| Tin Ma Steel Engineering Co., Limited | Private company limited by shares | Live |
| Bun Kee Steel Engineering Co., Limited | | Live |
| Lu Lu Fa Aluminum Steel Engineering Co., Limited | Private company limited by shares | Live |
| Asia Steel Engineering Co., Limited | | Live |
| CHUNG WAH STRUCTURAL STEEL ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| AOHUA STEEL STRUCTURE ENGINEERING CO., LIMITED | Private company limited by shares | Dissolved |
| HK Bonroy Steel Structure Engineering Co., Limited | | Live |
| Lianjian Steel Structure Engineering Co., Limited | | Live |
| EAST UNITED STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| EASY STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| FIRA STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Foison Steel Engineering Limited | | Live |
| GANGJIAN STEEL STRUCTURE ENGINEERING CO., LIMITED | | Live |
| GLOBAL TECH STEEL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| GLORIOUS STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| GOLDWAVE STEEL STRUCTURE ENGINEERING LIMITED | Private company limited by shares | Live |
| Guangzhou Moneybox Steel Structure Engineering Limited | Private company limited by shares | Live |
| HANG WUI STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| HANG KIN STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| Hang Fu Steel Engineering Co Limited | Private company limited by shares | Live |
| HARRY STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Harvest Steel Engineering Limited | Private company limited by shares | Live |
| HEROS STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| HIFORD STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| SAM HING STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| SUN NAM HING STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| HING FAT (ALUMINUM & STEEL) ASIA ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| WAI HING STEEL IRON ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| WING HING STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| YUN HUEN STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| INOX STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| KAM TIM IRON & STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| FAI KEE STEEL IRON ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| PUI KEE IRON & STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| PUI KEE PUI TEC YIP IRON & STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| WAI TAT STEEL & IRON ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| LEUNG KEE IRON & STEEL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| JACKSON STEEL AND ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WAH KEUNG STEEL ENGINEERING LIMITED | | Live |
| Kong Steel Engineering Company Limited | Private company limited by shares | Live |
| KOWLOON ENGINEERING & STEEL FURNITURE MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| WA YIP METAL AND STRUCTURAL STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| MING FAI STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| MING WAI STEEL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| MING KEE STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| NGAU KEE STEEL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| NGAU KEE STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| Ocean Win Steel Engineering Company Limited | | Live |
| PING ON STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| BIS HUA WEI PIPELINES & STEEL STRUCTURE ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| CN STEEL PIPING ENGINEERING CO., LIMITED | | Live |
| GOLD POWER STEEL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| WUI KIN STEEL SCAFFOLDING ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WUI LOONG STEEL SCAFFOLDING ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI HIP TUNG STEEL STRUCTURE ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Iron & Steel Engineering Solutions Limited | Private company limited by shares | Live |
| SILVER STAR STEEL & ALUMINUM ENGINEERING LIMITED | Private company limited by shares | Live |
| HOP FAT STRUCTURAL STEEL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| HO WAH STEEL STRUCTURE ENGINEERING LIMITED | Private company limited by shares | Live |
| Leung Yau Steel Structure Engineering Limited | Private company limited by shares | Live |
| MING KIU STEEL STRUCTURE ENGINEERING LIMITED | | Live |
| KAM YUEN STEEL STRUCTURE & ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| SUCCESS ENGINEERING & STEEL COMPANY LIMITED | Private company limited by shares | Live |
| Teamwork Steel Engineering Limited | Private company limited by shares | Live |
| FINE TECH (PARTNER) STEEL & IRON ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| STEEL ENGINEERING TECHNOLOGY LIMITED | | Live |
| SUN HO STEEL ENGINEERING TRADING LIMITED | Private company limited by shares | Live |
| WAI TUNG STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| WANG FAT STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| Wang Tat Steel Engineering Limited | Private company limited by shares | Live |
| Wang Fa Steel Structure Engineering Company Limited | Private company limited by shares | Live |
| WELL FORD STEEL ENGINEERING LIMITED | Private company limited by shares | Live |
| Ka Wing Steel Engineering Limited | Private company limited by shares | Dissolved |
| WING TAI STEEL ENGINEERING LIMITED | | Live |
| WING KAI STEEL FURNITURE & ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Wing Ming Steel Engineering Co Limited | Private company limited by shares | Live |
| MAN DAT ENGINEERING (STEEL WORK) COMPANY LIMITED | Private company limited by shares | Live |