| Shing Kam Metal & Steel Engineering Limited | Private company limited by shares | Live |
| Yau Shing Hat Steel Structures Eng. Limited | Private company limited by shares | Live |
| HIP SHING STEEL WORKS ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| TAT SHING STEEL & METAL WORKS CO. LIMITED | Private company limited by shares | Live |
| SHINNING STEEL CO., LIMITED | Private company limited by shares | Live |
| SHINNING MIND STEEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| SHINNING MIND METALS & STEEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| SHINY STEEL JEWELLERY COMPANY LIMITED | Private company limited by shares | Live |
| LEUNG YAU SHIP BREAKING AND STEEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| Steel Ships Limited | Private company limited by shares | Live |
| STEEL SHOP LIMITED | Private company limited by shares | Live |
| QINGDAO SHOUPU STEEL CO., LIMITED | Private company limited by shares | Live |
| ZHEJIANG CONCORD SHOUXIN STEEL INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| SHUANG YANG PRECISION SEAMLESS STEEL TUBE (HK) LIMITED | Private company limited by shares | Dissolved |
| Wugang Shuanghong Steel Limited | Private company limited by shares | Live |
| SHUANGTAI STEEL LIMITED | Private company limited by shares | Live |
| CANGZHOU SHUNCHANG SPECIAL STEEL LIMITED | Private company limited by shares | Live |
| Shunyon Steel (HK) Trading Limited | | Live |
| SIAM STEEL CENTRE LIMITED | Private company limited by shares | Live |
| China SilkRoad Steel Industry Holdings Limited | Private company limited by shares | Live |
| SILKY STEEL INDUSTRIAL CO. LIMITED | Private company limited by shares | Live |
| HUA XIA SINCERE STEEL CO., LIMITED | Private company limited by shares | Live |
| SINCERE IRON AND STEEL LIMITED | Private company limited by shares | Dissolved |
| Qingdao Sincerely Steel Co., Limited | | Live |
| WENZHOU SINCO STEEL CO., LIMITED | Private company limited by shares | Live |
| WO SING STEEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| Kee Sing Steel Engineering Limited | Private company limited by shares | Live |
| SING YIP STEEL ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| WAI SING IRON & STEEL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| DAH SING IRON & STEEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| KWAN SING STEEL DOOR & CO LIMITED | Private company limited by shares | Live |
| Tat Sing Steel and Metal Works Limited | Private company limited by shares | Live |
| SINGKONG STEEL WELDED MESH COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINO STEEL CO., LIMITED | Private company limited by shares | Live |
| QINGDAO ASIA SINO STEEL CO., LIMITED | Private company limited by shares | Live |
| SINO GLORY STEEL CO., LIMITED | Private company limited by shares | Live |
| QINGDAO SINO STEEL CO., LIMITED | Private company limited by shares | Live |
| SINO STEEL TRADE CO., LIMITED | Private company limited by shares | Live |
| SINO CONSTRUCTION STEEL CO., LIMITED | Private company limited by shares | Dissolved |
| SINO STEEL DEVELOPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| SINO STEEL ENTERPRISE COMPANY LIMITED | Private company limited by shares | Live |
| SINO STEEL GROUP CO., LIMITED | Private company limited by shares | Live |
| Sino Steel International Group Limited | | Live |
| SINO INDUSTRIAL STEEL CO., LIMITED | Private company limited by shares | Live |
| Sino Japan Germany Steel Industrial Limited | Private company limited by shares | Live |
| Sino Bao Steel Industry Co., Limited | Private company limited by shares | Dissolved |
| SINO NORTH STEEL INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| Sino Steel Solution Limited | | Live |
| SINO STEEL GROUP TRADING CO., LIMITED | Private company limited by shares | Live |
| SINOLINK STEEL LIMITED | Private company limited by shares | Live |
| SINOLINK STEEL AND METALS HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| Sino-Union Steel Company Limited | Private company limited by shares | Live |
| SINO-V STEEL LIMITED | Private company limited by shares | Live |
| Sinox Steel Group Limited | | Live |
| SKYBEST STEEL FACTORY LIMITED | Private company limited by shares | Dissolved |
| Slast Steel Co., Limited | | Live |
| ON SMART STEEL CO. LIMITED | Private company limited by shares | Dissolved |
| SOIL CONCRETE & STEEL LABORATORY LIMITED | Private company limited by shares | Dissolved |
| SOLO STAINLESS STEEL JEWELRY CO., LIMITED | Private company limited by shares | Live |
| STEEL TRADE SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| SOMAX STEEL LIMITED | Private company limited by shares | Live |
| HK Dragon Source Steel Limited | Private company limited by shares | Live |
| First Source Steel Limited | Private company limited by shares | Live |
| ORIGINAL SOURCES STAINLESS STEEL CO., LIMITED | Private company limited by shares | Dissolved |
| STEEL SOURCES HONG KONG LIMITED | Private company limited by shares | Live |
| Steel Sourcing Asia Limited | Private company limited by shares | Live |
| STEEL AXIS SOURCING LIMITED | Private company limited by shares | Live |
| STEEL SOURCING & SUPPLY LIMITED | Private company limited by shares | Live |
| SOUTHEAST ASIA STEEL GROUP LIMITED | Private company limited by shares | Dissolved |
| Southeast Iron & Steel Group Limited | | Live |
| SOUTHERN STEEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUTHERN CROSS STEEL HK PTY LIMITED | Private company limited by shares | Live |
| SPACEFRAME STEEL HK LIMITED | Private company limited by shares | Live |
| TAK KA SPECIAL STEEL COMPANY LIMITED | Private company limited by shares | Live |
| KUHN SPECIAL STEEL ASIA LIMITED | Private company limited by shares | Live |
| HK LYPO SPECIAL STEEL I & E LIMITED | Private company limited by shares | Live |
| Power Special Steel Limited | Private company limited by shares | Live |
| YUHONG SPECIAL STEEL COMPANY LIMITED | Private company limited by shares | Live |
| SPHERE STEEL WORKS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| STEEL SPORTS LIMITED | Private company limited by shares | Live |
| Running Spring Steel Limited | Private company limited by shares | Live |
| TUNG YUNG STEEL SPRING BAR FACTORY LIMITED | Private company limited by shares | Live |
| STEEL WIRE AND SPRING LIMITED | Private company limited by shares | Live |
| juxin steel wire and spring Limited | Private company limited by shares | Live |
| JING XIN STEEL WIRE SPRINGS COMPANY LIMITED | Private company limited by shares | Dissolved |
| TAK LEE STAINLESS STEEL CO. LIMITED | Private company limited by shares | Live |
| STAINLESS STEEL LIMITED | Private company limited by shares | Dissolved |
| KB STAINLESS STEEL LIMITED | Private company limited by shares | Live |
| BJ STAINLESS STEEL LIMITED | Private company limited by shares | Live |
| ALLIANCE STAINLESS STEEL WORKS COMPANY LIMITED | Private company limited by shares | Live |
| CROWN ALUMINIUM & STAINLESS STEEL ENGINEERING LIMITED -THE- | Private company limited by shares | Live |
| NGAI WAH STAINLESS STEEL & ALUMINIUM COMPANY LIMITED | Private company limited by shares | Live |
| AMPO STAINLESS STEEL LIMITED | Private company limited by shares | Live |
| Gloria Stainless Steel Appliance Limited | Private company limited by shares | Live |
| Times Stainless Steel Appliances Company Limited | Private company limited by shares | Live |
| ASIA STAINLESS STEEL LIMITED | Private company limited by shares | Live |
| BAOJING STAINLESS STEEL LIMITED | | Live |
| BILL STAINLESS STEEL LIMITED | Private company limited by shares | Dissolved |
| BNJIS STAINLESS STEEL CO., LIMITED | Private company limited by shares | Live |
| Bosking Stainless Steel Co., Limited | | Live |