| Proinfidem International (HK) Limited | Private company limited by shares | Live |
| PROINFO LIMITED | Private company limited by shares | Dissolved |
| Proinfo Tech Limited | Private company limited by shares | Live |
| Pro-Infra Science & Technology Limited | Private company limited by shares | Live |
| PROING MANUFACTURING COMPANY LIMITED | Private company limited by shares | Live |
| ProinHK Limited | | Live |
| BLB PRO-INNO CO., LIMITED | Private company limited by shares | Dissolved |
| Proinno Design & Construction Limited | Private company limited by shares | Dissolved |
| PRO-INNO TIME LIMITED | Private company limited by shares | Dissolved |
| PRO-INNO WATCH & JEWELLERY LIMITED | Private company limited by shares | Dissolved |
| PRO-INNOVATIVE MEDICAL LIMITED | Private company limited by shares | Dissolved |
| PROINSERCA LIMITED | Private company limited by shares | Live |
| PROINSIGHT LIMITED | | Live |
| PROINSO INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| Proinso HK Projects Limited | Private company limited by shares | Live |
| PRO-INVESTMENT LIMITED | Private company limited by shares | Live |
| Pro-investment Holding Limited | Private company limited by shares | Live |
| Proiny Company Limited | | Live |
| Pro-Inzight Limited | Private company limited by shares | Live |