| PROTABOLIS LIMITED | Private company limited by shares | Live |
| PROTAC INTERNATIONAL COMPUTER H.K. LIMITED | Private company limited by shares | Dissolved |
| PRO-TACTICS COMPANY LIMITED | Private company limited by shares | Live |
| Protacto Limited | | Live |
| ProTak Engineering Company Limited | Private company limited by shares | Live |
| HONG KONG PROTAK LIGHTING CO., LIMITED | Private company limited by shares | Live |
| PROTALEN MINING INTERNATIONAL CO. LIMITED | Private company limited by shares | Live |
| PRO-TALENT CO LIMITED | Private company limited by shares | Live |
| PROTALITE HONG KONG LIMITED | Private company limited by shares | Live |
| PROTANCO LIMITED | Private company limited by shares | Dissolved |
| Protanding Limited | Private company limited by shares | Live |
| PROTASAN LIMITED | Private company limited by shares | Live |
| PROTASKY CO., LIMITED | Private company limited by shares | Live |
| Hot Protato Limited | Private company limited by shares | Live |
| ProTax Business Limited | Private company limited by shares | Live |
| PROTEA COMPANY LIMITED | Private company limited by shares | Live |
| PRO-TEAM ADVERTISING LIMITED | Private company limited by shares | Dissolved |
| PROTEAM (ASIA) LIMITED | Private company limited by shares | Live |
| PROTEAM (CHINA) LIMITED | Private company limited by shares | Live |
| PROTEAM CONSULTING COMPANY LIMITED | Private company limited by shares | Dissolved |
| PROTEAM FAR EAST LIMITED | Private company limited by shares | Live |
| PRO-TEAM ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| PROTEAM GROUP LIMITED | Private company limited by shares | Live |
| PRO-TEAM INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| PROTEAM INVESTMENTS LIMITED | Private company limited by shares | Live |
| PROTEAN LIMITED | Private company limited by shares | Dissolved |
| PROTEAN LIMITED | | Live |
| PROTEAN ELECTRIC LIMITED | Private company limited by shares | Live |
| PROTEAN IMAGE GROUP LIMITED | Private company limited by shares | Dissolved |
| PROTEAN ELECTRIC (HONG KONG) LIMITED | Private company limited by shares | Live |
| PROTEC LIMITED | Private company limited by shares | Dissolved |
| PROTEC T&C LIMITED | | Live |
| PROTEC ASIA COMPANY LIMITED | Private company limited by shares | Live |
| PROTEC ENTERPRISES LIMITED | Private company limited by shares | Live |
| PROTEC HOLDING LIMITED | Private company limited by shares | Live |
| PRO-TEC INVESTMENT LIMITED | Private company limited by shares | Live |
| PROTEC MARITIME LIMITED | Private company limited by shares | Dissolved |
| PROTECALL INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| PROTECALL GROUP CO., LIMITED | Private company limited by shares | Live |
| PROTECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| IT PRO-TECH LIMITED | Private company limited by shares | Dissolved |
| Protech Limited | Private company limited by shares | Live |
| TOP PROTECH CO LIMITED | Private company limited by shares | Live |
| PROTECH CENTURY LIMITED | Private company limited by shares | Live |
| PRO-TECH ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| PROTECH HEALTHCARE LIMITED | Private company limited by shares | Dissolved |
| INGRAM PROTECH LIMITED | Private company limited by shares | Live |
| PRO-TECH INNOVATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| SALEMAY PRO-TECH LIMITED | Private company limited by shares | Live |
| Skyware ProTech Limited | Private company limited by shares | Live |
| Protech Sports Limited | Private company limited by shares | Live |
| PRO-TECHNIC COMPANY LIMITED | Private company limited by shares | Live |
| PRO-TECHNIC MACHINERY LIMITED | Private company limited by shares | Live |
| ProTechnology Limited | Private company limited by shares | Live |
| Protechssor Limited | Private company limited by shares | Live |
| GENERAL PROTECHT GROUP LIMITED | Private company limited by shares | Live |
| PROTECK LIMITED | Private company limited by shares | Live |
| Proteco Security Management Limited | Private company limited by shares | Live |
| PROTECO INTERNATIONAL TRADE CO., LIMITED | Private company limited by shares | Live |
| PROTECOAT COMPANY LIMITED | Private company limited by shares | Live |
| PROTECSEA Limited | Private company limited by shares | Live |
| UV SUN PROTECT COMPANY LIMITED | Private company limited by shares | Dissolved |
| PROTECT LIMITED | Private company limited by shares | Live |
| Protect IT Limited | Private company limited by shares | Live |
| Pet Protect Limited | | Live |
| APOLLON PROTECT ADMINISTRATION LIMITED | Private company limited by shares | Dissolved |
| ALFA PROTECT LIMITED | Private company limited by shares | Live |
| Protect Hong Kong Alliance Limited | Company limited by guarantee | Live |
| CHINA PROTECT ANCIENT TEA TREES ASSOCIATION LIMITED | Private company limited by shares | Live |
| USA AOMANSEN PLANT PROTECT LIMITED | Private company limited by shares | Live |
| CHINA PROTECT LAW LIMITED | Private company limited by shares | Live |
| PROTECT FOREIGN INVESTMENT IN CHINA LIMITED | Private company limited by shares | Dissolved |
| P2P PROTECT CO., LIMITED | Private company limited by shares | Live |
| DM PROTECT CO., LIMITED | Private company limited by shares | Live |
| GAOMI GANGSHENG LABOR PROTECT PRODUCTS CO., LIMITED | Private company limited by shares | Live |
| TAIWAN HEIMAO PROTECT ENVIRONMENT EQUIPMENTS CO., LIMITED | Private company limited by shares | Live |
| TAIWAN HEIMAO PROTECT ENVIRONMENT TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| KIMBAR PROTECT CO., LIMITED | Private company limited by shares | Live |
| TAIWEI ENVIRONMENT PROTECT TECHNOLOGY (HONGKONG) CO., LIMITED | Private company limited by shares | Dissolved |
| Shanghai XuanAn Environment Protect Technical (HongKong) Co., Limited | Private company limited by shares | Live |
| Protect Construction Engineering Co. Limited | Private company limited by shares | Live |
| PROTECT WATERPROOFING CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| DATA PROTECT LIMITED | Private company limited by shares | Live |
| E.C.Z PROTECT LIMITED | Private company limited by shares | Dissolved |
| PROTECT LOCKSMITH & ENGINEERING CO. LIMITED | Private company limited by shares | Live |
| PROTECT WATER-PROOF ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| PROTECT WATER-PROOF ENGINEERING CO. LIMITED | Private company limited by shares | Dissolved |
| PROTECT ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Family Protect Company Limited | Private company limited by shares | Live |
| AXA Global Protect (Hong Kong) Limited | Private company limited by shares | Live |
| EVONEX GOLD PROTECT LIMITED | Private company limited by shares | Live |
| Granada Protect Company Limited | | Live |
| World Old Trees Protect Research Center (Asia) Group Limited | Private company limited by shares | Live |
| ML.ROLAN MEDICINE PROTECT SKIN RESEARCH CENTER (H.K.) BOHUI INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| HONGKONG GREEN PROTECT CHEMICAL INT'L GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| Protect Hairologist Company Limited | Private company limited by shares | Live |
| Protect Health Company Limited | Private company limited by shares | Live |
| HEALTH PROTECT HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HONG KONG JIAJIE SHI ORAL PROTECT LIMITED | Private company limited by shares | Dissolved |
| JUST PROTECT INDUSTRY LIMITED | Private company limited by shares | Live |