| BLUE OCEAN SUPPLY CHAIN MANAGEMENT LIMITED | Private company limited by shares | Live |
| Ocean Blue Supply Chain Management Co. Limited | | Live |
| BLUE MANGO TV LIMITED | Private company limited by shares | Dissolved |
| BLUE MANGO TRADING LIMITED | Private company limited by shares | Dissolved |
| Blue Mansions Limited | | Live |
| BLUE STAR MANUFACTURE CO., LIMITED | Private company limited by shares | Live |
| BLUE RIBBON PLASTIC & METAL MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| BLUE OCEAN MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| BLUE ORCHID MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| BLUE PIGEON MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| MANY BLUE LIMITED | | Live |
| MANY BLUE NICKEL LIMITED | | Live |
| BLUE MARBLE LIMITED | Private company limited by shares | Live |
| BLUE MARBLE LIMITED | | Live |
| BLUE MARINE LIMITED | Private company limited by shares | Dissolved |
| Blue Sky Marine Limited | Private company limited by shares | Live |
| MARINE BLUE CATERING LIMITED | | Live |
| DEEP BLUE MARINE LIMITED | Private company limited by shares | Live |
| EVER BLUE MARINE SERVICE COMPANY LIMITED | Private company limited by shares | Live |
| OCEAN BLUE MARINE COMPANY LIMITED | Private company limited by shares | Live |
| Blue Ocean Marine Company Limited | | Live |
| BLUE MARINES LIMITED | Private company limited by shares | Live |
| BLUE SEA MARITIME COMPANY LIMITED | Private company limited by shares | Dissolved |
| Asia Blue Maritime Limited | Private company limited by shares | Dissolved |
| BLUE COAST MARITIME LIMITED | Private company limited by shares | Live |
| BLUE OCEAN MARITIME LIMITED | Private company limited by shares | Dissolved |
| Blue Ocean Maritime Company Limited | Private company limited by shares | Live |
| Blue Market Limited | | Live |
| BLUE MARKETING LIMITED | Private company limited by shares | Live |
| BLUE SEA MARKETING LIMITED | Private company limited by shares | Dissolved |
| BLUE OCEAN MARKETING DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| Violet & Blue Digital Marketing and Services Company Limited | | Live |
| Blue Ocean Marketing Group Limited | Private company limited by shares | Live |
| Hong Kong Blue Sky Marketing Plan Limited | Private company limited by shares | Live |
| Blue Interactive Marketing Limited | Private company limited by shares | Live |
| KENTUCKY BLUE MARKETING LIMITED | Private company limited by shares | Dissolved |
| Blue Lagoon Marketing Limited | Private company limited by shares | Live |
| BLUE LION MARKETING LIMITED | Private company limited by shares | Dissolved |
| Blue Mammoth Digital Marketing Co., Limited | | Live |
| BLUE CRAB MARKETING & MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| BLUE OCEAN MARKETING LIMITED | Private company limited by shares | Live |
| Blue Ocean Marketing & PR Limited | Private company limited by shares | Live |
| Shenzhen Blue Orient Marketing Company Limited | Private company limited by shares | Live |
| Blue Research Marketing Limited | Private company limited by shares | Live |
| BLUE MARKS LIMITED | Private company limited by shares | Live |
| Blue Marlin Limited | Private company limited by shares | Live |
| BLUE MARRY INVESTMENTS LIMITED | Private company limited by shares | Live |
| MASTER BLUE LIMITED | Private company limited by shares | Live |
| BLUE SKY NEW MATERIAL LIMITED | Private company limited by shares | Live |
| Blue Matter Biotechnology Company Limited | Private company limited by shares | Live |
| BLUE MEADOW LIMITED | Private company limited by shares | Live |
| Out of the Blue Media Limited | Private company limited by shares | Live |
| BLUE SKY MEDIA LIMITED | Private company limited by shares | Live |
| Blue Media Limited | Private company limited by shares | Live |
| Blue Ocean Advertising Media HK Limited | Private company limited by shares | Live |
| All Blue Chips Media Limited | | Live |
| Deep Blue Business Media Co., Limited | | Live |
| Blue Glow Media Co., Limited | Private company limited by shares | Live |
| Blue Ocean Media HK Co., Limited | Private company limited by shares | Live |
| BLUE DRAGON BB MEDIA COMPANY LIMITED | Private company limited by shares | Dissolved |
| Blue Goat Media Limited | Private company limited by shares | Live |
| BLUE MEDIA GROUP LIMITED | Private company limited by shares | Live |
| BLUE MEDIA HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| RED & BLUE (HONG KONG) MEDIA LIMITED | Private company limited by shares | Dissolved |
| Blue Horizon Media Limited | | Live |
| BLUE NILE MEDIA LIMITED | Private company limited by shares | Live |
| Ocean Blue Media Limited | Private company limited by shares | Live |
| Blue Ocean Media Company Limited | Private company limited by shares | Live |
| Blue Shark Media Limited | | Live |
| BLUE MEDIA INTERNATIONAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Blue Whale Media HK Limited | | Live |
| Blue White Media Limited | | Live |
| BLUE MEDICAL LIMITED | Private company limited by shares | Live |
| Blue Ocean Medical Group Limited | Private company limited by shares | Live |
| BLUE IDEA MEDICAL LIMITED | Private company limited by shares | Live |
| BLUE MEDICAL INNOVATION LIMITED | Private company limited by shares | Live |
| OCEAN BLUE MEDICAL MANAGEMENT LIMITED | Private company limited by shares | Live |
| Blue River Medical Limited | Private company limited by shares | Live |
| MEGA BLUE INC LIMITED | Private company limited by shares | Live |
| MEGA BLUE LIMITED | Private company limited by shares | Live |
| MELODY BLUE LIMITED | Private company limited by shares | Dissolved |
| BLUE MELODY CO., LIMITED | Private company limited by shares | Live |
| BLUE MELON LIMITED | Private company limited by shares | Live |
| HYDRO BLUE MEMBRANE TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| BLUE OCEAN MERCHANT MARINE LIMITED | Private company limited by shares | Live |
| Blue Mercury Hong Kong Limited | Private company limited by shares | Live |
| Blue Mercury Solutions Hong Kong Limited | Private company limited by shares | Dissolved |
| Blue Mercury Milan Limited | Private company limited by shares | Live |
| BLUE MERCURY TECHNOLOGY (INTERNATIONAL) LIMITED | Private company limited by shares | Live |
| BLUE MESA HONG KONG LIMITED | Private company limited by shares | Live |
| BLUE OCEAN PRECIOUS METAL INVESTMENT SERVICES (ASIA) LIMITED | Private company limited by shares | Live |
| BLUE METEOR Limited | Private company limited by shares | Live |
| BLUE NEW METHOD LIMITED | Private company limited by shares | Live |
| MEXICAN BLUE COMPANY LIMITED | Private company limited by shares | Live |
| BLUE MOON (CHINA) FIREWORKS MFG. LIMITED | Private company limited by shares | Dissolved |
| BLUE MOON (CHINA) FIREWORKS MFG. LIMITED | Private company limited by shares | Live |
| BLUE MICRO LIMITED | Private company limited by shares | Dissolved |
| MICRO BLUE LIMITED | Private company limited by shares | Live |
| MICRO BLUE TECHNOLOGY SHARES CO., LIMITED | Private company limited by shares | Live |
| MICRO BLUE ELECTRONIC&TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |