| BLUE OCEAN ENERGY CO., LIMITED | Private company limited by shares | Live |
| BLUE ENERGY GLOBAL TRADING COMPANY LIMITED | Private company limited by shares | Live |
| BLUE ENERGY INVESTMENT HOLDING GROUP LIMITED | Private company limited by shares | Dissolved |
| BLUE SKY ENERGY HONG KONG LIMITED | Private company limited by shares | Live |
| BLUE SKY NEW ENERGY INVESTMENT LIMITED | Private company limited by shares | Live |
| BLUE SKY ENERGY INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| BLUE SKY SOLAR ENERGY MANAGEMENT LIMITED | Private company limited by shares | Live |
| BLUE ENERGY MARINE SERVICE COMPANY LIMITED | Private company limited by shares | Live |
| BLUE SKY ASIA PACIFIC ENERGY ENTERPRISE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Asia Pacific Blue Ocean Energy Limited | Private company limited by shares | Live |
| Blue Sky Energy Saving Co Limited | Private company limited by shares | Live |
| BLUE SKY SOLAR ENERGY LIMITED | Private company limited by shares | Dissolved |
| BLUE SKY ENERGY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| BLUE ENERGY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Blue Engine Investment Consultants Limited | Private company limited by shares | Live |
| BLUE SKY ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| SKY BLUE ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| BLUE AGE ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| BLUE OCEAN ENGINEERING CO., LIMITED | | Live |
| BLUE SKY CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| SKY BLUE ENGINEERING (CONSTRUCTION) LIMITED | | Live |
| BLUE OCEAN ENGINEERING AND CONSULTING LIMITED | Private company limited by shares | Live |
| Blue Dart Engineering Limited | Private company limited by shares | Live |
| BLUE DIAMOND ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Dynamic Blue Engineering Service Limited | | Live |
| Blue Eastern Engineering Limited | Private company limited by shares | Live |
| Blue Sky Sunshine(Hong Kong)Decorative Engineering Co., Limited | | Live |
| Ocean Blue Marine Engineering Limited | Private company limited by shares | Live |
| BLUE MARINE SUPPLY AND ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| DEEP BLUE ENGINEERING & MATERIAL (CHINA) LIMITED | Private company limited by shares | Dissolved |
| Blue Ocean Mechanical&Electrical Engineering Co., Limited | Private company limited by shares | Live |
| BLUE OCEAN ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| BLUE OCEAN PLANNING (ENGINEERING) CO. LIMITED | Private company limited by shares | Live |
| Blue Power Engineering Limited | Private company limited by shares | Live |
| Blue Sky Power Engineering Company Limited | | Live |
| BLUE RIVER ENGINEERING LIMITED | Private company limited by shares | Live |
| Blue Sky Power Saving Engineering Limited | Private company limited by shares | Dissolved |
| Smart Blue Engineering Company Limited | Private company limited by shares | Live |
| Blue Dart Engineering (Solar) Limited | Private company limited by shares | Live |
| Blue Moon Engineering and Technologies Limited | | Live |
| Blue Sea Technology Engineering Limited | | Live |
| BLUE SKY ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| BLUE MAX ENTERPRISE LIMITED | Private company limited by shares | Live |
| Blue Box Enterprise Limited | Private company limited by shares | Live |
| Sky Blue Enterprise Limited | Private company limited by shares | Live |
| Blue Sky Enterprise Limited | | Live |
| OCEAN BLUE ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| BLUE OCEAN TRADING ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| BLUE BOX ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| BLUE SKY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Sky Blue (Enterprises) Company Limited | Private company limited by shares | Live |
| BLUE BELL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| COBALT BLUE ENTERPRISES LIMITED | Private company limited by shares | Live |
| Blue Dragon Enterprises Limited | Private company limited by shares | Dissolved |
| BLUE OCEAN ENTERPRISES LIMITED | Private company limited by shares | Live Commenced dormancy on 21-Feb-2014 |
| OCEAN BLUE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| BLUE WAVE ENTERPRISES LIMITED | Private company limited by shares | Live |
| BLUE TOP ENTERTAINMENT LIMITED | Private company limited by shares | Live |
| Blue Dot Entertainment Limited | | Live |
| NEW BLUE OCEAN ENTERTAINMENT LIMITED | Private company limited by shares | Live |
| Ocean Blue Entertainment Company Limited | | Live |
| Blue Hat Interactive Entertainment Technology Limited | Private company limited by shares | Live |
| Blue Sky Environment Construction (Hong Kong) Limited | Private company limited by shares | Live |
| BLUE MARG ENVIRONMENT TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| BLUE ENVIRONMENT SOLUTION LIMITED | Private company limited by shares | Live |
| BLUE SKY ENVIRONMENTAL COMPANY LIMITED | Private company limited by shares | Live |
| BLUE SKY ENVIRONMENTAL ASSOCIATION LIMITED | Company limited by guarantee | Live |
| BLUE STAR ENVIRONMENTAL PROTECTION ENERGY COMPANY LIMITED | Private company limited by shares | Live |
| Blue Ocean Environmental (Hong Kong) Limited | Private company limited by shares | Live |
| Blue Ocean Environmental Limited | Private company limited by shares | Live |
| BLUE OCEAN-ENCON ENVIRONMENTAL SOLUTIONS LIMITED | Private company limited by shares | Live |
| CHINA BLUE SKY ENVIRONMENTAL PROTECTION GROUP LIMITED | Private company limited by shares | Live |
| Blue Sky Environmental Protection Equipment (HK) Limited | Private company limited by shares | Live |
| BLUE SKY ENVIRONMENTAL PROTECTION (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| BLUE SKY ENVIRONMENTAL RECYCLING LIMITED | Private company limited by shares | Live |
| BLUE SEA ENVIRONMENTAL RESOURCES LIMITED | Private company limited by shares | Live |
| BLUE OCEAN ENVIRONMENTAL SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| BLUE SKY (CHINA) ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Blue Ocean Environmental Technology Co., Limited | | Live |
| DREAM BLUE ENVIRONMENTAL RECYCLE TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| BLUE SKY ENVIROTECH (HK) LIMITED | Private company limited by shares | Dissolved |
| Epic Blue Limited | Private company limited by shares | Live |
| BLUE EPOCH LIMITED | Private company limited by shares | Live |
| BLUE ICE ADVENTURE EQUIPMENT LIMITED | Private company limited by shares | Dissolved |
| CHINA BLUE SHIELD EQUIPMENT GROUP LIMITED | Private company limited by shares | Live |
| BLUE OCEAN EQUIPMENT (HK) LIMITED | Private company limited by shares | Live |
| LINYI BLUE SKY ENERGY EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| Blue Ocean Equipment And Material Co., Limited | | Live |
| BLUE OCEAN EQUIPMENT&ENGINEERING LIMITED | Private company limited by shares | Live |
| BLUE WATERS EQUITIES LIMITED | Private company limited by shares | Live |
| BLUE BAY CAPITAL EQUITY INVESTMENTS LIMITED | Private company limited by shares | Live |
| Blue Sky e-Shop Limited | Private company limited by shares | Live |
| ERA BLUE ESPORTS LIMITED | Private company limited by shares | Live |
| Populus Euphratica Blue Sky Co., Limited | | Live |
| EURL BLUE CHOICE LIMITED | Private company limited by shares | Live |
| BLUE JOE EUROPE INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| EVER BLUE LIMITED | | Live |
| EVER BLUE SKY LIMITED | | Live |
| EVERBRIGHT BLUE LIMITED | Private company limited by shares | Live |
| Blue Ocean of Excellence Limited | | Live |