| CARBON ENERGY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CARBON LIMIT ENERGY LIMITED | Private company limited by shares | Dissolved |
| CHINA ENERGY CARBON MATERIAL CO., LIMITED | Private company limited by shares | Dissolved |
| HK medium carbon energy group co., Limited | | Live |
| Carbon Energy & Resources Limited | Private company limited by shares | Live Commenced dormancy on 07-Sep-2011 |
| CARBON TECHNOLOGY ENERGY LIMITED | | Live |
| CARBON ENERGY INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| HS Carbon Neutrality & Energy Transition Investment Limited | | Live |
| DELTA TEC CARBON ENGINEERING LIMITED | Private company limited by shares | Live |
| EURO CARBON LIMITED | Private company limited by shares | Live |
| CARBON EXPORT LIMITED | Private company limited by shares | Live |
| EXPRESSIONS GLOBAL CARBON CO., LIMITED | Private company limited by shares | Live |
| CHENG FENG CARBON OFFSET COMPANY LIMITED | Private company limited by shares | Live |
| Cheng Feng Carbon Offset Company Limited | Private company limited by shares | Live |
| SAN CAI CARBON FIBER LIMITED | Private company limited by shares | Live |
| MIP CARBON FIBER LIMITED | | Live |
| CHINA CARBON FIBER CO., LIMITED | Private company limited by shares | Live |
| XC CARBON FIBER Co., LIMITED | Private company limited by shares | Live |
| CARBON FIBER FACTORY LIMITED | Private company limited by shares | Live |
| 3D Carbon Fiber Manufacturing Limited | Private company limited by shares | Dissolved |
| Mingxuan Carbon Fiber Technology Co., Limited | Private company limited by shares | Live |
| China HK Carbon Sequestration Financial Transaction Limited | Private company limited by shares | Live |
| CARBON FIRST LIMITED | Private company limited by shares | Dissolved |
| Carbon Focus Advisory Limited | | Live |
| CHINA CARBON NEUTRALITY FOUNDATION LIMITED | | Live |
| XIANGGANG FUHUA CARBON COMPANY LIMITED | | Live |
| Future Carbon HK Limited | | Live |
| Carbon Gift Company Limited | Private company limited by shares | Live |
| Giga Carbon Neutrality Asia Limited | Private company limited by shares | Live |
| Giga Carbon Neutrality HK Limited | Private company limited by shares | Live |
| GLOBAL CARBON X COMPANY LIMITED | Private company limited by shares | Live |
| GLOBAL CARBON CAPITAL LIMITED | Private company limited by shares | Live |
| GLOBAL CARBON CREDIT EXCHANGE LIMITED | Private company limited by shares | Dissolved |
| GLOBAL LOW CARBON BAO GROUP CO., LIMITED | Private company limited by shares | Live |
| GLOBAL CARBON HOLDING LIMITED | Private company limited by shares | Live |
| SEA GLOBAL CARBON ASSETS MANAGEMENT (HK) LIMITED | Private company limited by shares | Live |
| GLOBAL CARBON PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| Global Carbon Quota Company Limited | Private company limited by shares | Live |
| GLOBAL LOW CARBON ECONOMY THINK TANK LIMITED | Private company limited by shares | Dissolved |
| Carbon Global Tech Limited | | Live |
| Global Carbon Credit Trading Limited | Private company limited by shares | Live |
| Global Carbon Credit Trading Platform Limited | Private company limited by shares | Live |
| CHINESE GRAPHITE & CARBON LIMITED | Private company limited by shares | Live |
| CARBON GREEN ASIA (HK) LIMITED | Private company limited by shares | Dissolved |
| Green Carbon Group Limited | Private company limited by shares | Live |
| Green Carbon Capital Group Limited | Private company limited by shares | Live |
| GREEN CARBON NEUTRALITY LIMITED | | Live |
| Green Carbon Research Limited | | Live |
| Green Storm Carbon Limited | Private company limited by shares | Dissolved |
| GROUP CARBON LIMITED | Private company limited by shares | Dissolved |
| Ray Carbon Group Limited | Private company limited by shares | Live |
| CM CARBON GROUP LIMITED | | Live |
| CARBON ATOMIC GROUP LIMITED | | Live |
| Carbon Chain Holding Group Limited | | Live |
| HK LOW CARBON HEALTH RESEARCH LIMITED | Private company limited by shares | Dissolved |
| HENSEN CARBON LIMITED | Private company limited by shares | Live |
| SLC CARBON (HK) LIMITED | Private company limited by shares | Live |
| CARBON HOLDING LIMITED | Private company limited by shares | Live |
| The Carbon Company Holding Limited | | Live |
| Carbon Cabin International Holding Limited | | Live |
| Carbon Gold Holding Limited | Private company limited by shares | Live |
| Hong Kong Xinyue Activated Carbon Limited | | Live |
| Hong Kong Carbon Quantify Center Limited | | Live |
| Hong Kong Green Low Carbon Centre Limited | | Live |
| Hong Kong Centre for Carbon Innovation Limited | Private company limited by shares | Live |
| HONG KONG CARBON TRADING CENTRE COMPANY LIMITED | | Live |
| HONG KONG ENERGY CARBON CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Low Carbon Economy Association Limited -The- | Company limited by guarantee | Dissolved |
| SGL CARBON HONG KONG LIMITED | Private company limited by shares | Dissolved |
| KOT CARBON (HONG KONG) LIMITED | Private company limited by shares | Live |
| SGL Carbon Hong Kong Limited | Private company limited by shares | Live |
| Low Carbon Design Society of Hong Kong Limited | 擔保有限公司 | Live |
| CARBON EXCHANGE (HONG KONG) LIMITED | Private company limited by shares | Live |
| Carbon Twelve (Hong Kong) Limited | | Live |
| Hong Kong Carbon Assets Management Limited | Private company limited by shares | Live |
| Hong Kong Carbon Offset Foundation Limited | Company limited by guarantee | Live |
| SINOWAY CARBON (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG CARBON EMISSION TRADING LIMITED | Private company limited by shares | Live |
| Hong Kong Carbon Trading Limited | Private company limited by shares | Live Commenced dormancy on 22-Oct-2013 |
| Hong Kong Carbon Trading Limited | | Live |
| H.C CARBON HONGKONG COMPANY LIMITED | Private company limited by shares | Dissolved |
| KUNIMITSU CARBON INDUSTRIAL (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL CARBON INDUSTRIAL LIMITED | Private company limited by shares | Live |
| LOW CARBON INTERNATIONAL INDUSTRY ALLIANCE LIMITED | Private company limited by shares | Live |
| China Low Carbon Economy Industry Co., Limited | | Live |
| HAITONG CARBON INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| QILIN CARBON INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| SUNBURY CARBON INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| CARBON (HK) INDUSTRY LIMITED | Private company limited by shares | Live |
| China Carbon Industry Promote Academy Limited | Private company limited by shares | Live |
| PUXIN CARBON INDUSTRY LIMITED | Private company limited by shares | Live |
| ZHENDONG CARBON INDUSTRY LIMITED | Private company limited by shares | Live |
| CARBON INTERNATIONAL LIMITED | Private company limited by shares | Live |
| AC Carbon International Limited | Private company limited by shares | Live |
| LOW CARBON INVESTMENT LIMITED | Private company limited by shares | Live |
| CARBON INVESTMENT LIMITED | Private company limited by shares | Live |
| Carbon Chain Investment Holding Limited | | Live |
| Carbon Neutrality Investment Limited | | Live |
| Carbon Reserve Investments Limited | Private company limited by shares | Live |
| Ningxia Jiacheng Activated Carbon Co., Limited | Private company limited by shares | Live |