| Company Name | Type | Status |
|---|---|---|
| ATESA LIMITED | Private company limited by shares | Live |
| ATESON LIMITED | Live | |
| A-Test Compliance Services (HK) Co., Limited | Private company limited by shares | Live |
| A-TEST COMPLIANCE SERVICES (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| ATESTEO HK LIMITED | Private company limited by shares | Live |
| Atestman Co., Limited | Live |