| TEST AND GET COMPANY LIMITED | Private company limited by shares | Dissolved |
| TEST USA LIMITED | Private company limited by shares | Live |
| IT PRO TEST LIMITED | Private company limited by shares | Dissolved |
| A TEST LAB LIMITED | Private company limited by shares | Dissolved |
| ZA TEST LIMITED | Private company limited by shares | Live |
| ATE TEST LIMITED | Private company limited by shares | Live |
| Test Tea Co Limited | | Live |
| TEST AND SIMULATION ACTIVE DYNAMICS (H.K.) LIMITED | Private company limited by shares | Live |
| 159 Human Aging Test Laboratory (H.K.) Limited | Private company limited by shares | Live |
| HK ANGELAN TONGLI TEST EQUIPMENT LIMITED | Private company limited by shares | Live |
| TEST ASIA LIMITED | Private company limited by shares | Dissolved |
| SHK Test & Automation Limited | Private company limited by shares | Live |
| BEIJING XINGKELUDA TEST INSTRUMENT LIMITED | Private company limited by shares | Live |
| BRIGHTEN TEST PREP CENTRE LIMITED | Private company limited by shares | Live |
| CYTOLAB PAP TEST SCREENING CENTRE LIMITED | Private company limited by shares | Live |
| YUEN CHAK LOADING TEST LIMITED | Private company limited by shares | Dissolved |
| CHINA TEST LAB LIMITED | | Live |
| AAA Components Test Lab China Limited | Private company limited by shares | Live |
| MK TEST SYSTEMS (CHINA) LIMITED | Private company limited by shares | Dissolved |
| BUSINESS CHINESE TEST LIMITED | Private company limited by shares | Live |
| Aqua Emission Test & Analysis Co., Limited | Private company limited by shares | Live Commenced dormancy on 30-Oct-2015 |
| Test Best HK Co., Limited | Private company limited by shares | Live |
| Noa Test & Certification Co., Limited | Private company limited by shares | Live |
| 1ST COMPONENTS TEST LAB CO., LIMITED | Private company limited by shares | Live |
| HK WEN BO CULTURAL RELIC TEST CO., LIMITED | Private company limited by shares | Live |
| DERMATOGLYPH TEST CO., LIMITED | Private company limited by shares | Live |
| East Test Technology Co., Limited | Private company limited by shares | Live |
| CHINA MEDICAL TEST CO., LIMITED | Private company limited by shares | Live |
| Smart Test Co., Limited | Private company limited by shares | Live |
| A&A TEST SOLUTION CO., LIMITED | Private company limited by shares | Dissolved |
| SUPER TEST SERVICE CO., LIMITED | Private company limited by shares | Live |
| SVT TEST TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| TEST TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| PMT TEST TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| ACME TEST TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Test 5.0 Technology Consultancy Co., Limited | Private company limited by shares | Live |
| Smart Test Technology Co., Limited | Private company limited by shares | Live |
| Thermo Test Service (China) Co., Limited | Private company limited by shares | Live |
| Communications Test Design (HK) Limited | Private company limited by shares | Live |
| TEST ASIA CONSTRUCTION MATERIALS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG DRIVING TEST CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| LIFTING TEST CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| WELL TEST CONSULTANTS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| TEST FERRITE CORES (HK) COMPANY LIMITED | Private company limited by shares | Live |
| H.K Test Industry Corporation Limited | Private company limited by shares | Live |
| GMBH.RACE Test Department Limited | Private company limited by shares | Live |
| CHINA TEST DETECTION FEDERATION LIMITED | Private company limited by shares | Dissolved |
| DOUBLE TEST TOOLS COMPANY LIMITED | Private company limited by shares | Dissolved |
| EASY TEST LIMITED | Private company limited by shares | Dissolved |
| EU STANDARD ENGLISH LANGUAGE TEST CENTER LIMITED | Private company limited by shares | Live |
| WIN TEST ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ELITE ENVIRONMENTAL TEST EQUIPMENTS (H.K .) LIMITED | Private company limited by shares | Dissolved |
| EQUIP TEST ASIA LIMITED | Private company limited by shares | Dissolved |
| AI SI LI (CHINA) TEST EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| EOS TEST EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| LABTONE TEST EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| TJS METER TEST EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| TEST EQUIPMENT CONNECTION ASIA LIMITED | Private company limited by shares | Live |
| FITOW TEST EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| A&W Test Equipment Laboratory Limited | Private company limited by shares | Live |
| Linko Test Equipment Co., Limited | | Live |
| Test Equipment Asset Management (Asia) Limited | Private company limited by shares | Dissolved |
| KINGWELLS TEST EQUIPMENT MANUFACTURING LIMITED | Private company limited by shares | Live |
| MECTION TEST EQUIPMENT (HK) LIMITED | Private company limited by shares | Live |
| Ocean Tel Test Equipment Limited | | Live |
| HK SFZJ TEST EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| ZHEJIANG SUNBEN TEST EQUIPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| HK TEST EQUIPMENT TRADE LIMITED | Private company limited by shares | Live |
| YIXUN TEST EQUIPMENT (HK) LIMITED | Private company limited by shares | Live |
| ABLE (HONG KONG) TEST EQUIPMENTS CO. LIMITED | Private company limited by shares | Live |
| FIRST TEST LIMITED | Private company limited by shares | Live |
| FORTUNE TEST LIMITED | Private company limited by shares | Live |
| BBS Glass Test (Hong Kong) Company Limited | Private company limited by shares | Live |
| Test Global Quality Assurance Limited | Private company limited by shares | Live |
| TEST GLOBAL QUALITY ASSURANCE LIMITED | Private company limited by shares | Live |
| AS Test Certification Group Limited | Private company limited by shares | Live |
| ASE Assembly & Test (HK) Limited | Private company limited by shares | Dissolved |
| CTL TEST TECHNOLOGY SERVICE (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| TEST WELL ELECTRONICS (HK) LIMITED | Private company limited by shares | Live |
| H.K. FRIEND NEW MATERIALS DEV. TEST LIMITED | Private company limited by shares | Dissolved |
| PANSINO (HK) TEST AND MEASUREMENT COMPANY LIMITED | Private company limited by shares | Live |
| SOFTWARE TEST (HK) LIMITED | Private company limited by shares | Live |
| TESTRON TEST SYSTEMS (HK) LIMITED | Private company limited by shares | Live |
| ANTARES ADVANCED TEST TECHNOLOGIES (HK) LIMITED | Private company limited by shares | Dissolved |
| PRECISION TEST SYSTEM TECHNOLOGIES (HK) LIMITED | Private company limited by shares | Dissolved |
| TEST TECHNOLOGY (HK) LIMITED | Private company limited by shares | Dissolved |
| BGA TEST AND TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| Zhejiang RTS Test (HK) Co., Limited | Private company limited by shares | Live |
| Test Tea Holdings Limited | | Live |
| HONG KONG SAFETY TEST AND AUTHENTICATE LIMITED | | Live |
| Hong Kong Test Centre Limited | | Live |
| Hong Kong Medical Test Centre Limited | | Live |
| Cincinnati Test Systems - Hong Kong Limited | Private company limited by shares | Live |
| Hong Kong GRG Metrology & Test Co., Limited | Private company limited by shares | Live |
| Hong Kong LGT Test Service Co., Limited | | Live |
| WING TEST (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| HONG KONG EPHAH TEST TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| T.E.S.T. (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| EMISSION TEST CENTRE HONG KONG LIMITED | Private company limited by shares | Live |
| MING TEST TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |