| PROTIA LIMITED | Private company limited by shares | Dissolved |
| PROTIC LIMITED | Private company limited by shares | Live |
| Protify Limited | | Live |
| Protiga Company Limited | Private company limited by shares | Live |
| Protike Limited | Private company limited by shares | Live |
| Protile Asia Pacific Limited | Private company limited by shares | Live |
| PROTIME LIMITED | Private company limited by shares | Dissolved |
| PROTIME LIMITED | Private company limited by shares | Live |
| PROTIME CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| PROTIME TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| PROTIME ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| PROTIME (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| PROTIME INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| PROTIME INDUSTRIAL CORPORATION LIMITED | Private company limited by shares | Dissolved |
| PROTIME INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| PROTIME INVESTMENT LIMITED | Private company limited by shares | Live |
| PROTIME NETWORK LIMITED | Private company limited by shares | Live |
| PRO-TIME PRECISION LIMITED | Private company limited by shares | Dissolved |
| PROTIME INTERNET TECHNOLOGY LIMITED | Private company limited by shares | Live |
| PROTIN LIMITED | Private company limited by shares | Dissolved |
| PRO-TIN SMART HOLDING LIMITED | Private company limited by shares | Dissolved |
| ITALY PROTINI DRESS LIMITED | Private company limited by shares | Live |
| NEW PROTION LIMITED | Private company limited by shares | Live |
| PROTION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| HK PROTIS DESIGN CO., LIMITED | Private company limited by shares | Live |
| PROTIS ELECTRONIC LIMITED | Private company limited by shares | Live |
| PROTIS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Protium Limited | Private company limited by shares | Live |
| Protium Capital Limited | | Live |
| PROTIX LIMITED | Private company limited by shares | Live |
| PROTIX TRADING LIMITED | Private company limited by shares | Live |