| SANTEC LIMITED | Private company limited by shares | Dissolved |
| SANTEC HK LIMITED | Private company limited by shares | Live |
| Santec Chemical Cooperation Limited | | Live |
| SANTEC CO., LIMITED | Private company limited by shares | Live |
| SAN-TEC COMMUNICATION SCIENCE & TECH CO., LIMITED | Private company limited by shares | Dissolved |
| SANTEC DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| SANTEC TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| SANTEC ELECTRONICS LIMITED | Private company limited by shares | Live |
| SANTEC ENTERPRISES LIMITED | Private company limited by shares | Live |
| SANTEC HOLDINGS INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| SANTEC (HONG KONG) ENTERPRISES LIMITED | Private company limited by shares | Live |
| SANTEC (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SANTEC INDUSTRIES CO., LIMITED | Private company limited by shares | Live |
| SANTEC INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SANTEC INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| SANTEC INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SANTEC INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Santec Oral Care Limited | Private company limited by shares | Live |
| SANTEC TOOLS HK LIMITED | Private company limited by shares | Live |
| YUKITA SANTEC (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| SANTECH LIMITED | Private company limited by shares | Live |
| SAN-TECH ENTERPRISES (HOLDING) CO. LIMITED | Private company limited by shares | Dissolved |
| SANTECH INVESTMENT LIMITED | Private company limited by shares | Live |
| Santech Solutions Limited | Private company limited by shares | Live |
| SANTECHO CO., LIMITED | Private company limited by shares | Live |
| SANTECO LIMITED | Private company limited by shares | Live |