| 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 |
| Jiangsu Zero Carbon (Hong Kong) Limited | | Live |
| YI JING ACTIVATED CARBON CO., LIMITED | Private company limited by shares | Live |
| JINNAI CARBON (HK) CO., LIMITED | Private company limited by shares | Live |
| JUAN CARBON TECH CO., LIMITED | Private company limited by shares | Live |
| Korea Carbon International Co., Limited | Private company limited by shares | Live |
| Carbon Light Limited | Private company limited by shares | Live |
| Carbon Linking Limited | | Live |
| Carbon Trade and Logistic Limited | Private company limited by shares | Live |
| Carbon Assets Management Limited | Private company limited by shares | Live |
| Carbon Assets Management Limited | | Live |
| CHINA CARBON ASSET MANAGEMENT LIMITED | Private company limited by shares | Live |
| South China Carbon Resources Management Limited | | Live |
| CHINA CARBON SINK ASSET MANAGEMENT LIMITED | | Live |
| Carbon Credit Management Limited | | Live |
| CARBON PI (HK) MANAGEMENT LIMITED | | Live |
| Carbon Market Advisory Limited | Private company limited by shares | Live |
| Sky Low Carbon Material Limited | Private company limited by shares | Dissolved |
| Qingdao bonroy Carbon Material Co., Limited | Private company limited by shares | Live |
| MTE Graphite & Carbon Material Co., Limited | Private company limited by shares | Live |
| ECO Advanced Carbon Materials Company Limited | Private company limited by shares | Live |
| DACHUANG CARBON MATERIALS CO., LIMITED | | Live |
| YOUON CARBON MATERIALS CO., LIMITED | Private company limited by shares | Live |
| Carbon Technology New Materials Co., Limited | | Live |
| Mechel Carbon Hong Kong Limited | | Live |
| LOW CARBON METAL LIMITED | | Live |
| CARBON METAL LIMITED | | Live |
| Carbon Mining Technology Limited | Private company limited by shares | Live |
| MORKIN CARBON CO., LIMITED | | Live |
| NATURAL CARBON CO., LIMITED | Private company limited by shares | Dissolved |
| CARBON & NATURAL RESOURCES CORP. LIMITED | Private company limited by shares | Live |
| Carbon Negative Solution HK Limited | | Live |
| ASIA CARBON NEUTRAL LIMITED | Private company limited by shares | Live |
| CARBON NEUTRAL CONSULTING LIMITED | Private company limited by shares | Dissolved |
| Carbon Neutral Group Limited | | Live |
| V CARBON NOPAN LIMITED | | Live |
| Nova Carbon Limited | | Live |
| EOS CARBON OFFSET LIMITED | Private company limited by shares | Dissolved |
| Pure Carbon Opportunities Limited | Private company limited by shares | Dissolved |
| ORGANIC CARBON LIMITED | Private company limited by shares | Live |
| UR Organic Carbon Holding Limited | Private company limited by shares | Live |
| ORIENTAL CARBON LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL CARBON CO., LIMITED | Private company limited by shares | Live |
| Origins Carbon Limited | Private company limited by shares | Live |
| PACIFIC CARBON LIMITED | Private company limited by shares | Dissolved |
| Carbon Pacific Limited | Private company limited by shares | Live |
| Asia Carbon Partnership Limited | Private company limited by shares | Live |
| PRECIOUS CARBON LIMITED | Private company limited by shares | Live |
| CARBON PRODUCTION LIMITED | Private company limited by shares | Live |
| HK Gang Bao Carbon Products Limited | Private company limited by shares | Dissolved |
| ASIAN LOW CARBON ECONOMY PROMOTION ASSOCIATION LIMITED | Private company limited by shares | Live |
| Low Carbon Property Limited | Private company limited by shares | Live |
| China Low Carbon Environmental Protection Limited | Private company limited by shares | Live |
| QingHe Carbon Co., Limited | | Live |
| NET CARBON REDUCTION LIMITED | Private company limited by shares | Dissolved |
| China Carbon Emissions Reduction Association Limited | Private company limited by shares | Dissolved |
| HK Green Carbon Application Research Limited | | Live |
| CHINA CARBON EMISSIONS RESERVES GROUP LIMITED | Private company limited by shares | Live |
| Carbon Resources HK Limited | Private company limited by shares | Live |
| Carbon Road Limited | | Live |
| ROYAL CARBON LIMITED | Private company limited by shares | Live |
| CARBON SALES COMPANY LIMITED | Private company limited by shares | Dissolved |
| SCHUNK GENERAL CARBON LIMITED | Private company limited by shares | Live |