| E-UNION STANDARD CERTIFICATION LIMITED | | Live |
| DELTA TESTING & CERTIFICATION (HK) LIMITED | Private company limited by shares | Live |
| Hong Kong United Certification Co., Limited | | Live |
| Global Investment Industry Licence Certification Association Limited | Private company limited by shares | Live |
| Asian Institute of Testing and Certification Academy of Sciences Limited | Company limited by guarantee | Live |
| ASIA CULTURAL RELICS INSTITUTE INSPECTION AND CERTIFICATION LIMITED | Private company limited by shares | Live |
| LOYAL TIME INTERNATIONAL STANDARD CERTIFICATION LIMITED | Private company limited by shares | Dissolved |
| STANDARD INTERNATIONAL INSPECTION REGISTRATION & CERTIFICATION LIMITED | Private company limited by shares | Live |
| HK CENTURY INT'L EDUCATION GROUP CERTIFICATION LIMITED | Private company limited by shares | Live |
| SSBW INT'L MANAGEMENT CERTIFICATION LIMITED | Private company limited by shares | Dissolved |
| LO YU SAN ASSETS PROTECTION PLANNER CERTIFICATION CO., LIMITED | Private company limited by shares | Live |
| Absolute Quality Certification Limited | Private company limited by shares | Live |
| Overseas Marine Certification Services (OMCS CLASS) Limited | Private company limited by shares | Live |
| Safety Standard Testing and Certification Company Limited | Private company limited by shares | Dissolved |
| SOLA TESTING (CERTIFICATION) TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNITED NATIONS CERTIFICATION GROUP LIMITED | Private company limited by shares | Dissolved |
| ISO Certifications Limited | Private company limited by shares | Dissolved |
| GREATER CHINA CERTIFICATIONS LIMITED | Private company limited by shares | Live |
| Nutek Certifications Limited | Private company limited by shares | Live |
| CERTIFIED LIMITED | Private company limited by shares | Dissolved |
| EU Certified Limited | Private company limited by shares | Live |
| CERTIFIED DIAMONDS LIMITED | Private company limited by shares | Live |
| Tested Unite Verification Certified Company Limited | Private company limited by shares | Dissolved |
| CCK - Certifier Corporation HK Limited | Private company limited by shares | Live |
| CYRUS CERTIFIKA PTE LIMITED | Private company limited by shares | Dissolved |
| Certiform Limited | Private company limited by shares | Dissolved |
| Danny International Certify Services Limited | Private company limited by shares | Live |
| CERTIMA LIMITED | Private company limited by shares | Dissolved |
| CERTIN ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| CERTINO LIMITED | Private company limited by shares | Dissolved |
| CERTIPEN COMPANY LIMITED | Private company limited by shares | Dissolved |
| CERTISE LIMITED | Private company limited by shares | Live |
| Certitude Group Limited | | Live |
| Certitudo Management Limited | | Live |
| CERTIZEN LIMITED | Private company limited by shares | Live |
| CERTIZEN TECHNOLOGY LIMITED | Private company limited by shares | Live |
| BIOTEK CERTMARK LIMITED | Private company limited by shares | Live |
| CERTO AUCTORE LIMITED | Private company limited by shares | Live |
| Hong Kong Certo Technology Co., Limited | Private company limited by shares | Live |
| Certo Successo (HK) Limited | Private company limited by shares | Dissolved |
| CERTO INTERNATIONAL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| CERTO INVESTMENT AND MINING GROUP LIMITED | Private company limited by shares | Live |
| certoplast Asia Pacific Limited | Private company limited by shares | Live |
| CERTOSA TRADING LIMITED | Private company limited by shares | Live |
| CERTPAC LIMITED | Private company limited by shares | Live |
| CERTSON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| CERTUS LIMITED | Private company limited by shares | Live |
| Certus HK Limited | Private company limited by shares | Live |
| CERTUS WEALTH ADVISORS LIMITED | Private company limited by shares | Live |
| Certus Automotive (HK) Limited | Private company limited by shares | Live |
| CERTUS AUTOTEC LIMITED | Private company limited by shares | Live |
| Certus Capital Limited | Private company limited by shares | Live |
| Certus Consulting Limited | Private company limited by shares | Live |
| Certus Eiger Limited | Private company limited by shares | Live |
| CERTUS GLOBAL NETWORK LIMITED | Private company limited by shares | Live |
| Certus Importo Company Limited | Private company limited by shares | Live |
| CERTUS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CERTUS INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| CERTUS INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Certus Nordend Limited | Private company limited by shares | Live |
| Certus Education Partners Limited | | Live |
| CERTWIN LIMITED | Private company limited by shares | Dissolved |