| OPTIMA STEAMER WASHING HONG KONG LIMITED | Company limited by guarantee | Live |
| Optima Stone Limited | Private company limited by shares | Live |
| OPTIMA STONE GROUP LIMITED | Private company limited by shares | Live |
| OPTIMA STRATEGIES LIMITED | Private company limited by shares | Live |
| OPTIMA SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| Optima Tech Innovations Limited | | Live |
| OPTIMA TECHNOLOGY (ASIA) LIMITED | Private company limited by shares | Dissolved |
| SPACE TIME OPTIMA LIMITED | Private company limited by shares | Live |
| OPTIMA TRADE LIMITED | | Live |
| OPTIMA TRADING LIMITED | Private company limited by shares | Live |
| OPTIMA TRADING LIMITED | Private company limited by shares | Live |
| Optima Envision Ventures Limited | Private company limited by shares | Live |
| GLOBAL OPTIMA VENTURES (HK) LIMITED | Private company limited by shares | Dissolved |
| Wise Optima Co Limited | Private company limited by shares | Live |
| Optimac Limited | Private company limited by shares | Dissolved |
| OPTIMAG LIMITED | Private company limited by shares | Dissolved |
| OPTIMAG Hong Kong Limited | Private company limited by shares | Dissolved |
| OPTIMAG MAGNETIC LIMITED | Private company limited by shares | Dissolved |
| OPTIMAGE LIMITED | Private company limited by shares | Live |
| Optimajet Limited | | Live |
| OPTIMAL KEY LIMITED | Private company limited by shares | Live |
| Optimal Ads Limited | Private company limited by shares | Live |
| Optimal Bnb Limited | Private company limited by shares | Live |
| Optimal 118 Limited | Private company limited by shares | Live |
| Optimal Limited | | Live |
| OPTIMAL ADVISORS LIMITED | Private company limited by shares | Dissolved |
| OPTIMAL AESTHETICS LIMITED | Private company limited by shares | Live |
| Optimal Asia Limited | Private company limited by shares | Live |
| Optimal Axis Limited | Private company limited by shares | Live |
| Optimal Business Performance Limited | Private company limited by shares | Live |
| OPTIMAL CHEER (HONG KONG) LIMITED | Private company limited by shares | Live |
| OPTIMAL CHENG COMPANY LIMITED | Private company limited by shares | Live |
| OPTIMAL CHINA (HK) LIMITED | Private company limited by shares | Live |
| OPTIMAL CHINA INVESTMENT SERVICE LIMITED | Private company limited by shares | Dissolved |
| OPTIMAL (CHINA) MACHINERY CO., LIMITED | Private company limited by shares | Live |
| Optimal Choice Limited | | Live |
| Chuanglai Optimal (HK) Co., Limited | Private company limited by shares | Live |
| OPTIMAL 3D SOLUTIONS CO., LIMITED | Private company limited by shares | Dissolved |
| OPTIMAL SOURCES CO., LIMITED | Private company limited by shares | Dissolved |
| Optimal Trade Co., Limited | Private company limited by shares | Live |
| YUNJI OPTIMAL (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| Optimal Health Collaboration Limited | Private company limited by shares | Live |
| OPTIMAL COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| OPTIMAL COMPETENCE LIMITED | Private company limited by shares | Live |
| Optimal Consultancy Company Limited | Private company limited by shares | Live |
| OPTIMAL CONSULTANTS LIMITED | Private company limited by shares | Live |
| OPTIMAL CONSULTING LIMITED | Private company limited by shares | Live |
| Optimal Human Resources Consulting Limited | Private company limited by shares | Live |
| OPTIMAL JEWELLERY DESIGN & CONSULTANT LIMITED | Private company limited by shares | Dissolved |
| Optimal Electronics Limited | Private company limited by shares | Live |
| ASIA BROTHERS OPTIMAL ENERGY CO., LIMITED | Private company limited by shares | Live |
| OPTIMAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| OPTIMAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| OPTIMAL EQUITY LIMITED | Private company limited by shares | Live |
| OPTIMAL FOCUS LIMITED | Private company limited by shares | Live |
| OPTIMAL GAINS LIMITED | Private company limited by shares | Dissolved |
| Optimal Gene Limited | Private company limited by shares | Live |
| OPTIMAL GROUP LIMITED | Private company limited by shares | Dissolved |
| Optimal Galaxy Group Limited | Private company limited by shares | Live |
| Optimal Sources Group Limited | Private company limited by shares | Live |
| OPTIMAL GROUP (UK) LIMITED | Private company limited by shares | Live |
| OPTIMAL HEALTH CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| Optimal Health Cooperation Limited | Private company limited by shares | Live |
| Optimal Family Health Limited | Private company limited by shares | Live |
| Optimal Healthcare Limited | Private company limited by shares | Live |
| OPTIMAL HERO LIMITED | Private company limited by shares | Live |
| OPTIMAL INTERNATIONAL (HK) LIMITED | Private company limited by shares | Dissolved |
| OPTIMAL J (HONGKONG) HOLDING LIMITED | | Live |
| HONG KONG OPTIMAL SHENG GROUP LIMITED | Private company limited by shares | Live |
| Optimal Axis Hong Kong Limited | Private company limited by shares | Live |
| Hong Kong Optimal Trade Company Limited | Private company limited by shares | Dissolved |
| OPTIMAL INCOME LIMITED | Private company limited by shares | Live |
| OPTIMAL INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| GOLD OPTIMAL INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| HUIPIN OPTIMAL INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| GLOBAL OPTIMAL INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| OPTIMAL INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| Ty Optimal Ann International Limited | Private company limited by shares | Live |
| OPTIMAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Optimal Jiali Electronic (Hongkong) Company Limited | Private company limited by shares | Live |
| OPTIMAL MANAGEMENT LIMITED | Private company limited by shares | Live |
| Oia Optimal Marketing Limited | Private company limited by shares | Live |
| Optimal Health Medical Limited | Private company limited by shares | Live |
| OPTIMAL MEDICAL LABORATORY (HONG KONG) LIMITED | Private company limited by shares | Live |
| OPTIMAL MEDICAL LABORATORY LIMITED | Private company limited by shares | Live |
| MEGA OPTIMAL LIMITED | | Live |
| OCEAN OPTIMAL COMPANY LIMITED | Private company limited by shares | Live |
| Optimal Outlook Limited | Private company limited by shares | Live |
| OPTIMAL PILLAR LIMITED | Private company limited by shares | Live |
| Optimal Point 118 Limited | Private company limited by shares | Live |
| OPTIMAL PRODUCT (CHINA) CO., LIMITED | Private company limited by shares | Live |
| CHINUO OPTIMAL PRODUCT INTERNATIONAL LIMITED | | Live |
| Mei Lan Optimal Product (Hong Kong) Limited | | Live |
| OPTIMAL PROMISE LIMITED | Private company limited by shares | Live |
| Optimal Property Limited | Private company limited by shares | Live |
| Optimal Point Property Limited | Private company limited by shares | Live |
| Optimal Movement And Rehabilitation Limited | Private company limited by shares | Live |
| OPTIMAL RESULT INVESTMENTS LIMITED | Private company limited by shares | Live |
| Optimal Results Limited | Private company limited by shares | Live |
| OPTIMAL RISE LIMITED | Private company limited by shares | Live |