| Energetic Electrical Asia Limited | Private company limited by shares | Live |
| CHINA ELECTRICAL ENERGY GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| Aoshida Mechanical & Electrical Engineering Co., Limited | Private company limited by shares | Live |
| ASCEND ELECTRICAL & MECHANICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ASSOCIATED ELECTRICAL ENGINEERING (CHINA) LIMITED | Private company limited by shares | Live |
| BAAHU ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Biens Electrical and Mechanical Engineering Limited | Private company limited by shares | Live |
| TSAN BONG ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| BOSEN ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| CENTRAL MECHANICAL AND ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live Commenced dormancy on 19-Jul-2012 |
| CENTURIAN ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| CHEE LICK ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| CHINA ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| CHINA ENGINEERS ELECTRICAL AND ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| CHINA ELECTRICAL ENGINEERING (HK) LIMITED | Private company limited by shares | Dissolved |
| WO CHONG ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| WAN CHONG ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| CHONG SHI ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| New Chong Electrical Engineering Limited | Private company limited by shares | Live |
| CHONG HO ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| CHONG NGAI ELECTRICAL ENGINEERING CO., LIMITED | Private company limited by shares | Dissolved |
| CLYLIC ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| MY GROUP CONSTRUCTION & ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| Dongcheng Electrical Engineering Limited | Private company limited by shares | Live |
| CTS ELECTRONIC & ELECTRICAL ENGINEERING CO., LIMITED | Private company limited by shares | Dissolved |
| ELITE ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| EVER ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| EVER LUCK ELECTRICAL ENGINEERING LIMITED | | Live |
| EXCELLENCE ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| NEW FLIGHT ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| FORCE ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| NEW FORCE ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| FRIENDSHIP ELECTRICAL ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| FUNGS ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| GIBB ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| GINTO MECHANICAL AND ELECTRICAL ENGINEERING (HK) LIMITED | Private company limited by shares | Live |
| WELL GROWTH ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| HANG FAI ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| Hang Tai Electrical Engineering Limited | Private company limited by shares | Live |
| LIK HANG ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| Hang Lee Air-Condition Electrical Engineering Limited | | Live |
| HANG ON AIR CONDITION & ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| HANG FAI ELECTRICAL MECHANICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| HANG YIP ELECTRICAL & MECHANICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| HANG YIP ELECTRICAL METAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| HANWAY ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| GLORY HARVEST ELECTRICAL ENGINEERING (HK) LIMITED | Private company limited by shares | Live |
| HENCHMAN ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| YEE HING ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WIN HING ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| HING FAT ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| Hing Tat Electrical and Engineering Limited | | Live |
| HING WAH ELECTRICAL ENGINEERING LIMITED | | Live |
| SAM HING AIR-CONDITION AND ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| CHIT HING ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| Hop Hing Electrical Engineering Co., Limited | Private company limited by shares | Live |
| HING FAT MACHINERY & ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live Commenced dormancy on 10-Sep-2015 |
| SUN HING ELECTRICAL & MECHANICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| SAN HING MECHANICAL & ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| Kin Hing Electrical & Mechanical Engineering Limited | | Live |
| MING HING ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| NGAI HING ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SHUI HING ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WANG HING ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| WING HING ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| WING HING ELECTRICAL AIR-CON ENGINEERING LIMITED | Private company limited by shares | Live |
| HOLDER ELECTRICAL & MECHANICAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| HUNTER ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| JACKSON ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| JIATAI ELECTRICAL ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| KALIN ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| KAPPA ELECTRICAL AND MECHANICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Kunto Mechanical & Electrical Engineering (HK) Limited | Private company limited by shares | Live |
| LICK HANG ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| Grande Lighting Electrical Engineering Co., Limited | Private company limited by shares | Live |
| LINGMA ELECTRICAL & MECHANICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| LUNG FAI ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| WAI LUNG ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| KAM LUNG ELECTRICAL AIR-CONDITION ENGINEERING LIMITED | Private company limited by shares | Live |
| Manda Electrical Engineering Co., Limited | Private company limited by shares | Live |
| MARINE & ELECTRICAL ENGINEERING COMPANY, LIMITED | Private company limited by shares | Dissolved |
| DRAGON STAR ELECTRICAL MECHANICAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| MODERNIZE ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| NANFONG ELECTRICAL AND ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| PANG HO ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| Partner-Up Electrical Appliances & Engineering Company Limited | Private company limited by shares | Live |
| TAI PING ELECTRICAL (ENGINEERING) COMPANY LIMITED | Private company limited by shares | Live |
| POWERFUL ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Powerful Electrical Engineering Company Limited | Private company limited by shares | Live |
| Quality Craftsman Electrical Engineering Company Limited | Private company limited by shares | Live |
| RISING ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| RISING UNIT ELECTRICAL ENGINEERING CO. LIMITED | Private company limited by shares | Live |
| SAGE ELECTRICAL ENGINEERING LIMITED | | Live |
| Seaway Electrical Engineering Co., Limited | Private company limited by shares | Live |
| SKYTON ELECTRICAL & MECHANICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Sunny Electrical Engineering Limited | | Live |
| SUNNY ELECTRICAL ENGINEERING (CONTRACTING) LIMITED | Private company limited by shares | Dissolved |
| SUPER ELECTRICAL & ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| SUPER VIEW ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| Taiho Electrical Engineering Company Limited | | Live |