| Maxima Legacy Cantonese Opera Troupe Co. Limited | Private company limited by shares | Live |
| PRECIOUS JADE CANTONESE OPERA TROUPE LIMITED | Private company limited by shares | Dissolved |
| Tsang Yuk Nui Chinese Opera Association Limited | Company limited by guarantee | Live |
| Tulipa Opera Scholarum Limited | | Live |
| Opera Unite HK Limited | Private company limited by shares | Live |
| UTOPIA CANTONESE OPERA WORKSHOP LIMITED | Company limited by guarantee | Live |
| Opera & Wine Limited | Private company limited by shares | Live |
| FAI WONG CHINESE OPERA HOLDING LIMITED | Private company limited by shares | Dissolved |
| OPERA WORKSTATION LIMITED | Private company limited by shares | Live Commenced dormancy on 30-Oct-2007 |
| World Opera Financing Company Limited -The- | Private company limited by shares | Dissolved |
| World Opera Holding Investment Company Limited -The- | Private company limited by shares | Dissolved |
| YING LEUNG CANTONESE OPERA LIMITED | Private company limited by shares | Live |
| OPERACG LIMITED | Private company limited by shares | Live |
| OPERAMA INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Motus Operandi HK Limited | Private company limited by shares | Live |
| HONG KONG CANTONESE OPERAONE TWO TROUPE LIMITED | Company limited by guarantee | Dissolved |
| JINIAO COMMERCIAL OPERARION LIMITED | Private company limited by shares | Live |
| OPERA'S LIMITED | Private company limited by shares | Dissolved |
| SMOOTH OPERATE LIMITED | Private company limited by shares | Live |
| TRADE OPERATE LIMITED | Private company limited by shares | Live |
| OperaTec Limited | Private company limited by shares | Live |
| SUPREME FASHIONS OPERATED BY SCOTNELL LIMITED | Private company limited by shares | Dissolved |
| China Privately Operated Iron Tower Company Limited | Private company limited by shares | Live |
| LST Operating Limited | Private company limited by shares | Live |
| HL OPERATING LIMITED | Private company limited by shares | Live |
| SUN OPERATING LIMITED | Private company limited by shares | Live |
| China AIOT operating Group Limited | Private company limited by shares | Live |
| Altech Operating System Limited | | Live |
| HK MEIJIN YUJIA BRAND OPERATING LIMITED | Private company limited by shares | Live |
| Carloks Capital Operating Limited | Private company limited by shares | Dissolved |
| Scitus Cement (China) Operating Company Limited | Private company limited by shares | Live |
| CHINA GIFT HK OPERATING CENTER LIMITED | | Live |
| TIN ON Industrial Park Operating Management COMPANY LIMITED | Private company limited by shares | Live |
| OPERATING AND MAINTENANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| PEAK OPERATING ROOMS LIMITED | Private company limited by shares | Dissolved |
| Reach New Retail Operating Co. Limited | Private company limited by shares | Live |
| Operating Room Company Limited -The- | Private company limited by shares | Live |
| BUSINESS OPERATING SOFTWARE SOLUTION LIMITED | Private company limited by shares | Live |
| BUSINESS OPERATING SOFTWARE SYSTEM LIMITED | Private company limited by shares | Live |
| CHINA TELEVISION OPERATING LIMITED | Private company limited by shares | Dissolved |
| CHINA TELEVISION OPERATING CO. LIMITED | Private company limited by shares | Live |
| Udeer Operating Co., Limited | | Live |
| OPERATION LIMITED | Private company limited by shares | Dissolved |
| TAK YIU OPERATION LIMITED | Private company limited by shares | Dissolved |
| ACS OPERATION LIMITED | Private company limited by shares | Live |
| SH OPERATION LIMITED | Private company limited by shares | Dissolved |
| KDX OPERATION LIMITED | Private company limited by shares | Live |
| OPERATION LIMITED -THE- | Private company limited by shares | Live |
| CHA SAT OPERATION LIMITED | Private company limited by shares | Live |
| Sai Lap Operation Limited | Private company limited by shares | Live |
| JIG Operation Limited | Private company limited by shares | Live |
| C and T Operation Limited | | Live |
| VMT OPERATION LIMITED | | Live |
| K'S OPERATION LIMITED | | Live |
| YNF Hotels Operation (Admiralty) Limited | | Live |
| Jinying Animation Investment Operation Co., Limited | Private company limited by shares | Live |
| Arco Cubus Operation Limited | Private company limited by shares | Live |
| SWARCO ASIA OPERATION LIMITED | Private company limited by shares | Dissolved |
| CHANGJIANG HI-TECH INVESTMENT ASSETS OPERATION COMPANY LIMITED | Private company limited by shares | Live |
| Operation Bamboo Limited | | Live |
| Basic Operation Limited | | Live |
| Blackbox Operation Limited | Private company limited by shares | Live |
| OPERATION BLESSING HONG KONG LIMITED | Company limited by guarantee | Live |
| CDMA OPERATION EXPANSION LIMITED | Company limited by guarantee | Dissolved |
| Asia Catering Chain Operation Limited | Private company limited by shares | Live |
| CHAIN OPERATION BUSINESS SCHOOL CHINA LIMITED | Private company limited by shares | Live |
| CIAPST OPERATION CENTRE LIMITED | Private company limited by shares | Live |
| HK DKT BUSINESS ASSETS OPERATION CO., LIMITED | Private company limited by shares | Live |
| Bandai Catering Operation Co., Limited | Private company limited by shares | Live |
| GUSHAN CAPITAL OPERATION CO., LIMITED | Private company limited by shares | Dissolved |
| Cogen Operation Limited | | Live |
| MG COMMERCIAL OPERATION HOLDING LIMITED | Private company limited by shares | Live |
| COTOL CONSULTANCY OF TECHNOLOGICAL OPERATION LIMITED | Private company limited by shares | Dissolved |
| BELT AND ROAD OF CONTEST OPERATION CO., LIMITED -THE- | Private company limited by shares | Live |
| CL CORP. OPERATION LIMITED | Private company limited by shares | Live |
| OPERATION DAWN LIMITED | Company limited by guarantee | Live |
| EDKO THEATRE OPERATION LIMITED | Private company limited by shares | Live |
| KEY OPERATION & ELECTRO COMPONENTS LIMITED | Private company limited by shares | Live |
| Elego Operation Company Limited | Private company limited by shares | Live |
| OPERATION EMPOWER LIMITED | Company limited by guarantee | Live |
| COMBINED ENDOSCOPY AND OPERATION (SURGICAL) CENTRE LIMITED | Private company limited by shares | Live |
| Ewapeslife Operation Company Limited | Private company limited by shares | Live |
| FELIX Knowledge Operation Limited | | Live |
| Flora Catering Operation Co., Limited | Private company limited by shares | Live |
| MANHATTAN FORTUNE CAPITAL OPERATION LIMITED | Private company limited by shares | Dissolved |
| Freshion Operation Limited | Private company limited by shares | Live |
| PLDC Global Operation Limited | Private company limited by shares | Live |
| GRACE OPERATION COMPANY LIMITED | Company limited by guarantee | Live |
| GUDAI ASSETS OPERATION LIMITED | Private company limited by shares | Live |
| HARVEST OPERATION COMPANY LIMITED | Private company limited by shares | Live |
| HDI HOTEL OPERATION (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| AN TAI INSTALL OPERATION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Jichuangjiahe (China) Knowledge Operation Limited | Private company limited by shares | Live |
| OPERATION KITE LIMITED | Company limited by guarantee | Live |
| LATEST OPERATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| SONGYINGRIFENG MANAGE OPERATION LIMITED | Private company limited by shares | Dissolved |
| HK HONGYILI ATTRACT INVESTMENT OPERATION MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| DINGSHENG BUSINESS OPERATION MANAGEMENT LIMITED | Private company limited by shares | Live |
| GOLDENLION BUSINESS OPERATION MANAGEMENT LIMITED | Private company limited by shares | Live |
| CHINA ASSETS OPERATION MANAGEMENT COMPANY LIMITED | Private company limited by shares | Live |