| ACEC GROUP CO., LIMITED | Private company limited by shares | Live |
| ACEC (HK) Co., Limited | Private company limited by shares | Dissolved |
| ACEC PHOTONICS LIMITED | Private company limited by shares | Live |
| ACECA LIMITED | Private company limited by shares | Live |
| AceCamp International Limited | Private company limited by shares | Live |
| ACECCTV ELECTRONICS LIMITED | Private company limited by shares | Live |
| ACE-CENTRE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ACEC-FAR EAST HEADQUARTERS LIMITED | Private company limited by shares | Dissolved |
| AceCGT Diagnostic Limited | Private company limited by shares | Live |
| AceCGT DigiHealth Limited | Private company limited by shares | Live |
| ACECHEM GROUP LIMITED | Private company limited by shares | Live |
| ACECHEM (HK) LIMITED | Private company limited by shares | Live |
| ACECHEM (HK) INDUSTRY LIMITED | Private company limited by shares | Live |
| ACE-CHEM PLAST LIMITED | Private company limited by shares | Dissolved |
| ACE-CHIP TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| ACECI INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| ACECLASS LIMITED | Private company limited by shares | Dissolved |
| ACECODE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ACECODE RESOURCES HOLDING LIMITED | Private company limited by shares | Dissolved |
| ACECON LIMITED | Private company limited by shares | Live |