| HONG KONG NEW STAR CROWN DOOR CONTROL CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Gaize Crown Door Control Co., Limited | Private company limited by shares | Live |
| Hong Kong Crown Door Control Technology Co., LIMITED | Private company limited by shares | Live |
| Hong Kong Crown Door Control Hardware Co., Limited | Private company limited by shares | Live |
| HONG KONG HAIDA (INTERNATIONAL) DOOR CONTROL HOLDINGS COMPANY LIMITED | Private company limited by shares | Live |
| Shanghai crown door control hardware (Hong Kong) Limited | Private company limited by shares | Live |
| Flight Control General Aviation (Hong Kong) Co. Limited | Private company limited by shares | Live |
| ART FLOW CONTROL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| WEIR FLOW CONTROL (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG TONGTAI WORLD FORTUNE (CONTROL) GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| HONG KONG NEW SIGHT GOOD FIRE CONTROL CHEMICAL CO., LIMITED | Private company limited by shares | Dissolved |
| CUTEST (HONG KONG) INTERNATIONAL SHARE CONTROL GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Fengge Intelligent Control Technology Group Limited | | Live |
| Hong Kong Vision prevention and Control Institute Group Co., Limited | | Live |
| Hong Kong Cosette investment control group co., Limited | Private company limited by shares | Live |
| HONG KONG BAIJIA INTERNATIONAL INVESTMENT CONTROL GROUP LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Light Control Group Co., Limited | Private company limited by shares | Live |
| HAIF CONTROL HONG KONG CO LIMITED | Private company limited by shares | Live |
| Xinneng Intelligent Control (Hong Kong) Technology Investment Holdings Limited | | Live |
| LEI JIN HONG HOLLAND CONTROL LIMITED | Private company limited by shares | Live |
| HUADIAN (HONG KONG) MEASUREMENT CONTROL EQUIPMENT COMPANY LIMITED | Private company limited by shares | Live |
| BEST CONTROL INDUSTRIAL (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Laina Industrial Control Co., LIMITED | Private company limited by shares | Live |
| Hong Kong I Control Technology Industrial Co., Limited | Private company limited by shares | Dissolved |
| Hong Kong Hanfung Industrial Control Trading Limited | Private company limited by shares | Live |
| REYNOLDS INDUSTRIAL CONTROL (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG INSTITUTE OF PROJECT CONTROL ENGINEERS LIMITED -THE- | Company limited by guarantee | Dissolved |
| HONG KONG INTER- CONTROL SYSTEM LIMITED | Private company limited by shares | Dissolved |
| HONG KONG LONG CONTROL INVESTMENT LIMITED | Private company limited by shares | Live |
| Hong Kong Juncker Automation Equipment Control Limited | Private company limited by shares | Live |
| JZ CONTROL (HONG KONG) LIMITED | Private company limited by shares | Live |
| Hong Kong Bright View Electrical Control Technology Limited | Private company limited by shares | Live |
| HONG KONG BESTLOK AUTOMATIC CONTROL EQUIPMENT LIMITED | Private company limited by shares | Live |
| INVENSYS FLOW CONTROL (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG CLEANING PEST CONTROL SERVICES LIMITED | Private company limited by shares | Live |
| TIMES PEST CONTROL HONG KONG LIMITED | Private company limited by shares | Live |
| TIME CONTROL SYSTEMS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Yiosi Window Control Technology Limited | | Live |
| YONGLE AUTOMATION CONTROL (HONG KONG) LIMITED | Private company limited by shares | Live |
| BALLROOM DANCING BOARD OF CONTROL OF HONG KONG AND MACAU LIMITED | Company limited by guarantee | Dissolved |
| Microbial Control (Hong Kong) Limited | | Live |
| HONG KONG MOSQUITO CONTROL APPLIANCES CO. LIMITED | Private company limited by shares | Live |
| Newbo Control (Hong Kong) Limited | Private company limited by shares | Dissolved |
| CONTROL OPTICS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| Hong Wai Pest Control Company Limited | Private company limited by shares | Live |
| Hong Kong Pest Control Association Limited | | Live |
| P&E PEST CONTROL HONG KONG LIMITED | Private company limited by shares | Live |
| HONG KONG PHOENIX INTERNATIONAL INVESTMENT CONTROL LIMITED | Private company limited by shares | Dissolved |
| Rail Control Systems Hong Kong Limited | Private company limited by shares | Live |
| HONG KONG REMOTE CONTROL SPORTS ASSOCIATION LIMITED | Company limited by guarantee | Live |
| ASIA CONTROL RESOURCES (HONG KONG) LIMITED | Private company limited by shares | Live |
| SHANGHAI PEOPLE'S ELECTRONIC CONTROL EQUIPMENT (HONG KONG) LIMITED | Private company limited by shares | Live |
| SHANGHAI PEOPLE CONTROL (HONG KONG) LIMITED | Private company limited by shares | Live |
| FRANCE LAOYECHE INTERNATIONAL CONTROL SHARE (HONG KONG) CLOTHES LIMITED | Private company limited by shares | Dissolved |
| DSC Electronics (Digital Show Control Electronics) Hong Kong Limited | Private company limited by shares | Live |
| SPECTRUM CONTROL (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG BILLIARD SPORTS CONTROL COUNCIL COMPANY LIMITED | Company limited by guarantee | Live |
| STATIC CONTROL COMPONENTS (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG DINGGE ELECTROMECHANICAL WINDOW CONTROL SYSTEM LIMITED | | Live |
| UT CONTROL SYSTEMS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Integrated Control Technology (Hong Kong) Limited | Private company limited by shares | Live |
| CONTROL TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| Hong Kong Dekan Termite Control Technology Limited | | Live |
| Tong Dai Control (Hong Kong) Limited | Private company limited by shares | Live |
| HONG KONG AEROSPACE SATELLITE TRACKING AND CONTROL LIMITED | Private company limited by shares | Live |
| Hong Kong Kai Fu Gold Control Trading Limited | Private company limited by shares | Live |
| Kim Control (Hong Kong) Trading Limited | Private company limited by shares | Live |
| TRICOLOR (HONG KONG) MEASURE AND CONTROL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| VALPRO CONTROL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SEWAGE & WASTE CONTROL HONG KONG LIMITED | Private company limited by shares | Live |
| Hong Kong Xiaoji Smart Control Limited | Private company limited by shares | Live |
| Hong Kong Vei Zimi International Health Control Limited | Private company limited by shares | Dissolved |
| BFLOWS CONTROL (HONGKONG) LIMITED | Private company limited by shares | Live |
| HONGKONG WEIPU CONTROL EQUIPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| HongKong Easthigh Pests Control Co., Limited | Private company limited by shares | Live |
| HONGKONG TEKANG CONTROL EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| HONGKONG DAYU NUMERICAL CONTROL LIMITED | Private company limited by shares | Dissolved |
| DEREAL FLOW CONTROL HONGKONG LIMITED | Private company limited by shares | Live |
| HONGKONG EASTONE FLOW CONTROL CO., LIMITED | Private company limited by shares | Live |
| HONGKONG SIED ELECTRIC CONTROL LIMITED | Private company limited by shares | Dissolved |
| TYD Control Engineering (HongKong) Company Limited | Private company limited by shares | Live |
| HONGKONG SHENGDA AUTOMATIC CONTROL ENGINEERING LIMITED | Private company limited by shares | Live |
| VALOUR (HONGKONG) CONTROL ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| VALOUR (HONGKONG) CONTROL ENGINEERING CO., LIMITED | | Live |
| HONGKONG NEW CENTURY CONTROL EQUIPMENT COMPANY LIMITED | Private company limited by shares | Live |
| FANSHI MEASUREMENT AND CONTROL (HONGKONG) INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| FW FLOW CONTROL (HONGKONG) LIMITED | Private company limited by shares | Live |
| IVS FLOW CONTROL (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| SMART FLOW CONTROL (HONGKONG) LIMITED | Private company limited by shares | Live |
| HONGKONG HENGDA FLUID CONTROL LIMITED | Private company limited by shares | Live |
| HONGKONG CONTROL CIRCUIT GROUP LIMITED | Private company limited by shares | Live |
| Hongkong Youshi Group Control Limited | Private company limited by shares | Live |
| DURKEN HEARN FLOW CONTROL (HONGKONG) LIMITED | Private company limited by shares | Live |
| HONGKONG HONKI CONTROL SYSTEM CO., LIMITED | Private company limited by shares | Live |
| HONGKONG INFRATEK MEASUREMENT & CONTROL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HongKong ND Inspection & Control Solution Co., Limited | Private company limited by shares | Live |
| Keyva Control (HongKong) Limited | Private company limited by shares | Dissolved |
| HONGKONG INT'L CONTROL SMOKE LABORATORY LIMITED | Private company limited by shares | Live |
| MCVOLANCE CONTROL VALVES (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| HONGKONG JINGRUI MEASUREMENT AND CONTROL TECHNOLOGY LIMITED | | Live |