| K Production & Engineering Company Limited | Private company limited by shares | Live |
| ALLIANCE ENGINEERING AND DESIGN LIMITED | Private company limited by shares | Live |
| Sun Ray Energy Limited | Private company limited by shares | Live |
| ENLUOSI LIMITED | Private company limited by shares | Live |
| YUEN LONG ENGINEERING LIMITED | Private company limited by shares | Live |
| HAN SAM ENTERPRISES LIMITED | Private company limited by shares | Live |
| VIEW MAX ENTERPRISE LIMITED | Private company limited by shares | Live |
| POTENTIAL ENERGY LIMITED | Private company limited by shares | Live |
| BASEMART ENGINEERING (HONG KONG) LIMITED | Private company limited by shares | Live |
| WIN ASIA ENGINEERING LIMITED | Private company limited by shares | Live |
| VOGEL ENGINEERING LIMITED | Private company limited by shares | Live |
| Energy Power Systems Limited | Private company limited by shares | Live |
| ENORMOUS HAPPINESS LIMITED | Private company limited by shares | Live |
| ACE ENORMOUS LIMITED | Private company limited by shares | Live |
| ENVIRIA ASIA LIMITED | Private company limited by shares | Live |
| Mei Hing Engineering Limited | Private company limited by shares | Live |
| Y'O DESIGN & ENGINEERING LIMITED | Private company limited by shares | Live |
| DRAGONWAY CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| JIN ZAI JI ENVIRONMENT ENGINEERING LIMITED | Private company limited by shares | Live |
| SAM Force Engineering Limited | Private company limited by shares | Live |
| CCW Enterprise Limited | Private company limited by shares | Live |
| Luxland Enterprises Limited | Private company limited by shares | Live |
| TIN YAU ENGINE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| FIRST ENGLISH LIMITED | Private company limited by shares | Live |
| MING WAI (CONSTRUCTION) ENGINEERING LIMITED | Private company limited by shares | Live |
| Handerun Hauling Engineering Limited | Private company limited by shares | Live |
| Vision Electronic Engineering Company Limited | Private company limited by shares | Live |
| POLARBEAR ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| A Plus Construction Engineering Company Limited | Private company limited by shares | Live |
| Hao Long Engineering Co., Limited | Private company limited by shares | Live |
| Rich Wealth E&M Engineering Limited | Private company limited by shares | Live |
| SUM YUEN CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| PROSPEROUS NEW ENERGY RESOURCES LIMITED | Private company limited by shares | Live |
| Health Energy Solution Limited | Private company limited by shares | Live |
| Suk Lik Construction Engineering Limited | Private company limited by shares | Live |
| GRACE MATERIAL ENGINEERING LIMITED | Private company limited by shares | Live |
| YAN'S BOAT CONSTRUCTION ENGINEERING CO, LIMITED | Private company limited by shares | Live |
| LUXURY ENERGY ENGINEERING CONSULTING LIMITED | Private company limited by shares | Live |
| Hoi Sung Engineering Company Limited | Private company limited by shares | Live |
| WING YIU ENGINEERING (MECHANICAL & ELECTRICAL) COMPANY LIMITED | Private company limited by shares | Live |
| GROUP ENERGY LIMITED | Private company limited by shares | Live |
| SAMUEL ENVIRONMENTAL RESOURCES (INTERNATIONAL) LIMITED | Private company limited by shares | Live |
| TOP RISING ENGINEERING LIMITED | Private company limited by shares | Live |
| Best mix technology engineering company Limited | Private company limited by shares | Live |
| DUYE ENTERPRISE LIMITED | Private company limited by shares | Live |
| SHANGHAI PEOPLE WATER-PUMP ENGINEERING LIMITED | Private company limited by shares | Live |
| Encora Technologies HK Limited | Private company limited by shares | Live |
| Asia Pacific Energy (Hong Kong) Limited | Private company limited by shares | Live |
| enebrain hk Limited | Private company limited by shares | Live |
| DINGSHENG HUIHUANG CHINA ENERGY COMPANY LIMITED | Private company limited by shares | Live |
| MILLIONS MARBLE ENGINEERING LIMITED | Private company limited by shares | Live |
| Amplio Energy Asia Limited | Private company limited by shares | Live |
| Tanken Engineering Co. Limited | Private company limited by shares | Live |
| PEAK ENVIRONMENTAL RESOURCES LIMITED | Private company limited by shares | Live |
| Endor HK Limited | Private company limited by shares | Live |
| KO LONG GAS ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| GOOD FORTUNE ENGINEERING LIMITED | Private company limited by shares | Live |
| HONGKONG ENJOY BUSINESS LIMITED | Private company limited by shares | Live |
| CENTRAL ENVIRONMENT TECHNOLOGY (CHINA) CO., LIMITED | Private company limited by shares | Live |
| SAMUEL ENVIRONMENTAL RESOURCES (HONG KONG) LIMITED | Private company limited by shares | Live |
| Vibration and Environmental Testing Company Limited | Private company limited by shares | Live |
| PHD Enterprises Limited | Private company limited by shares | Live |
| VASPLEX MOTOR ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HC Engineering & Construction Company Limited | Private company limited by shares | Live |
| CRAFTS ENGINEERING LIMITED | Private company limited by shares | Live |
| MYG Enterprise Limited | Private company limited by shares | Live |
| CK CONSTRUCTION ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Enormous Treasure Limited | Private company limited by shares | Live |
| LC ENGINEERING LIMITED | Private company limited by shares | Live |
| WING KA ENGINEERING LIMITED | Private company limited by shares | Live |
| SUN HOP ENGINEERING LIMITED | Private company limited by shares | Live |
| GREEN GLOBAL ENERGY LIMITED | Private company limited by shares | Live |
| TRUE ENERGY INVESTMENTS LIMITED | Private company limited by shares | Live |
| VICTORY FAME ENTERPRISES LIMITED | Private company limited by shares | Live |
| Enrique Lago Co., Limited | Private company limited by shares | Live |
| INTEGRATED GREEN ENERGY HK COMPANY LIMITED | Private company limited by shares | Live |
| Kam Chin Engineering Limited | Private company limited by shares | Live |
| Grand Fame Engineering & Manufacturing Limited | Private company limited by shares | Live |
| Yonker Environmental Protection (HK) Limited | Private company limited by shares | Live |
| HK LANDU LUBRICATION ENVIRONMENTAL PROTECTION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| GREAT ENVIRONMENTAL EQUIPMENT (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| ABLE WEALTH CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| GRAND YIELD ENTERPRISES LIMITED | Private company limited by shares | Live |
| TIME ON ENTERPRISES LIMITED | Private company limited by shares | Live |
| Full Honor Engineering Limited | Private company limited by shares | Live |
| JBD Entertainment Limited | Private company limited by shares | Live |
| KIM ONE ENTITY LIMITED | Private company limited by shares | Live |
| Shewell Environmental Technology Co., Limited | Private company limited by shares | Live |
| Smile Engine Company Limited | Private company limited by shares | Live |
| Energies Tranding Company Limited | Private company limited by shares | Live |
| Sai Tai Engineering Limited | Private company limited by shares | Live |
| MBS Environmental Science And Technology Co., Limited | Private company limited by shares | Live |
| POWER THREE STRUCTURAL ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| Sinochem Energy Hong Kong Co., Limited | Private company limited by shares | Live |
| FASTUP STAR ENGINEERING LIMITED | Private company limited by shares | Live |
| European Environmental Protection Technology Co., Limited | Private company limited by shares | Live |
| Eastern Technology Engineering Limited | Private company limited by shares | Live |
| MAX WEALTHY ENTERPRISES LIMITED | Private company limited by shares | Live |
| ENDY INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| MING ENGINEERING LIMITED | Private company limited by shares | Live |