| TATS IT LIMITED | Private company limited by shares | Live |
| FAI TATS LIMITED | Private company limited by shares | Live |
| Tat's Limited | Private company limited by shares | Live |
| Tat's Way Limited | Private company limited by shares | Live |
| TATS RESTAURANT LIMITED | Private company limited by shares | Live |
| TATSEG INTERNATIONAL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| TATSHING METAL MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| HANG TAT-SING INVESTMENT COMPANY, LIMITED | Private company limited by shares | Live |
| TATSKY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| TATSKY INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| TATSON LIMITED | Private company limited by shares | Dissolved |
| Tatson Lambda Limited | Private company limited by shares | Live |
| TATSON MINERALS LIMITED | Private company limited by shares | Dissolved |
| TATSONT COMPANY LIMITED | Private company limited by shares | Live |
| Tatsoo HK Limited | Private company limited by shares | Dissolved |
| TATSU LIMITED | Private company limited by shares | Dissolved |
| Jun Tatsu Company Limited | Private company limited by shares | Live |
| CATTLEYA TATSU LIMITED | Private company limited by shares | Live |
| KI TATSU ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| KO TATSU TRADE LIMITED | Private company limited by shares | Dissolved |
| TATSUAKI FASHION LIMITED | Private company limited by shares | Dissolved |
| TATSUJIN COMPANY LIMITED | Private company limited by shares | Dissolved |
| TATSU-ME LIMITED | Private company limited by shares | Dissolved |
| TATSUMI LIMITED | Private company limited by shares | Dissolved |
| TATSUMI INTERTRADE COMPANY LIMITED | Private company limited by shares | Dissolved |
| TATSUMI MANIFOLD LIMITED | Private company limited by shares | Dissolved |
| TATSUMI TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| TATSUN LIMITED | Private company limited by shares | Dissolved |
| TATSUO TRAVEL SERVICE COMPANY LIMITED | Private company limited by shares | Live |
| TATSUTA ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| TATSUYA COMPANY LIMITED | Private company limited by shares | Live |
| Tatsuya Capital Limited | | Live |
| TATSUYAMA SEIKO (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| TATSUYAMA SEIMITSU(HONG KONG)CO., LIMITED | | Live |
| TATSUYUKI TRADE COMPANY OF HK LIMITED | Private company limited by shares | Live |