| XN PROTEL SYSTEMS (HONG KONG) LIMITED | Private company limited by shares | Live |
| PROTEL SOFTWARE PRODUCTS LIMITED | Private company limited by shares | Live |
| Protel Circuit Tech Limited | Private company limited by shares | Live |
| PROTELIGEN GROUP LIMITED | Private company limited by shares | Live |
| PROTELL LIMITED | Private company limited by shares | Dissolved |
| PROTEMAX LIMITED | Private company limited by shares | Live |
| PROTEN LIMITED | Private company limited by shares | Dissolved |
| PROTEN LIMITED | Private company limited by shares | Live |
| PROTEN INC LIMITED | Private company limited by shares | Live |
| PROTEN DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| Proten (Asia) System Engineering Company Limited | Private company limited by shares | Live |
| PRO-TEN Environmental Services Limited | Private company limited by shares | Live |
| PRO-TEN E-SYSTEM LIMITED | Private company limited by shares | Live |
| PROTEN INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| Proten (International) Limited | Private company limited by shares | Live |
| PROTEN INVESTMENT LIMITED | Private company limited by shares | Live |
| LEGEND PROTEN LIMITED | Private company limited by shares | Live |
| PROTEN TRADING LIMITED | Private company limited by shares | Live |
| RHM PROTENA LIMITED | Private company limited by shares | Dissolved |
| PROTEND INTERNATIONAL LIMITED | Private company limited by shares | Live |
| PRO-TENT MANUFACTURING COMPANY LIMITED | Private company limited by shares | Live |
| PROTEOME LIMITED | | Live |
| PROTEOMEDICS LIMITED | Private company limited by shares | Dissolved |
| ProteoQuest Limited | | Live |
| PROTERCTION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| PROTEST LIMITED | Private company limited by shares | Live |
| PROTESTANT PEOPLES' CHURCH LIMITED | Company limited by guarantee | Dissolved |
| Shanghai Protesting Nature Investment & Management Co. Limited | Private company limited by shares | Dissolved |
| PROTEUS LIMITED | Private company limited by shares | Dissolved |
| Proteus Limited | Private company limited by shares | Live |
| PROTEUS ELECTRIC LIMITED | Private company limited by shares | Live |
| PROTEUS GROUP LIMITED | Private company limited by shares | Live |
| Proteus Digital Health Asia Limited | Private company limited by shares | Live |
| PROTEUS HOLDING LIMITED | Private company limited by shares | Live |
| PROTEUS INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| PROTEUS MARINE LIMITED | Private company limited by shares | Live |
| PROTEUS SHIPPING LIMITED | Private company limited by shares | Dissolved |
| PROTEUS SOLUTIONS LIMITED | Private company limited by shares | Live |
| PROTEUS SPORTS LIMITED | Private company limited by shares | Dissolved |
| VIRTUAL PROTEUS TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| PROTEUS TRADING HK LIMITED | Private company limited by shares | Live |
| PROTEUSASIA LIMITED | Private company limited by shares | Dissolved |
| Protevia (Hong Kong) Green Financial Holding Group Limited | Private company limited by shares | Live |
| PROTEX LIMITED | Private company limited by shares | Live |
| Protex Con Limited | Private company limited by shares | Live |
| PROTEX INC LIMITED | Private company limited by shares | Live |
| PROTEX AUTOMATION LIMITED | Private company limited by shares | Live |
| PROTEX ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| PROTEX INC. LIMITED | Private company limited by shares | Dissolved |
| Protex Point Limited | Private company limited by shares | Live |
| PROTEXIM LIMITED | Private company limited by shares | Dissolved |
| PRO-TEXTRA CO., LIMITED | Private company limited by shares | Live |
| PROTEXTRADE LIMITED | Private company limited by shares | Dissolved |
| Prothese Direct Limited | Private company limited by shares | Live |
| PROTHEUS TRADING LIMITED | Private company limited by shares | Dissolved |
| PROTHOM LIMITED | Private company limited by shares | Live |
| 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 |
| PROTO COMPANY LIMITED | Private company limited by shares | Dissolved |
| PROTO COMPANY LIMITED | Private company limited by shares | Live |
| PROTOAD COMPANY LIMITED | Private company limited by shares | Live |
| PROTOCERATOPS COMPANY LIMITED | | Live |
| PROTOCHIC LIMITED | Private company limited by shares | Dissolved |
| PROTOCOL LIMITED | Private company limited by shares | Dissolved |
| NEW PROTOCOL LIMITED | Private company limited by shares | Live |
| PROTOCOL V LIMITED | Private company limited by shares | Dissolved |
| PROTOCOL B LIMITED | Private company limited by shares | Dissolved |
| PROTOCOL S LIMITED | Private company limited by shares | Dissolved |
| PROTOCOL COMPANY LIMITED | Private company limited by shares | Dissolved |
| BOX PROTOCOL LIMITED | Private company limited by shares | Live |
| Ola Protocol Limited | | Live |