| KONG'S WATER-PIPE ENGINEERING LIMITED | Private company limited by shares | Live |
| Wing Lik Waterpipe Engineering Limited | Private company limited by shares | Live |
| On Ying Water-Pipe Engineering Limited | | Live |
| HONG HONG WATERPIPE LIMITED | | Live |
| Giant Spring Waterpipe Engineering Company Limited | Private company limited by shares | Live |
| Waterpipeplus (HK General Agent) Co. Limited | Private company limited by shares | Live |
| WATERPIPEPLUS (HKD12) COMPANY LIMITED | Private company limited by shares | Live |
| Waterpipeplus (HKI07) Co. Limited | Private company limited by shares | Live |
| WaterpipePlus (HKK02) Co. Limited | Private company limited by shares | Live |
| WaterpipePlus (HKL07) Co. Limited | Private company limited by shares | Live |
| WATERPIPEPLUS (HKM01) LIMITED | Private company limited by shares | Live |
| Waterpipeplus (HKO06) Co. Limited | Private company limited by shares | Live |
| Waterpipeplus (HKQ14) Co. Limited | Private company limited by shares | Live |
| WATERPIPEPLUS (HKR05) LIMITED | Private company limited by shares | Live |
| KEUNG KEE WATER-PIPES & DRAINAGE SERVICE ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| WATERPLAN PROJECTS LIMITED | Private company limited by shares | Live |
| WATERPLUS (HK) LIMITED | Private company limited by shares | Live |
| JP WATERPOWER CO., LIMITED | Private company limited by shares | Live |
| WATERPOWER TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| WaterPro Company Limited | Private company limited by shares | Live |
| WATERPRO (HONG KONG) LIMITED | Private company limited by shares | Live |
| NAN BON WATERPROOF COMPANY LIMITED | Private company limited by shares | Live |
| New People Assept Construction Waterproof Engineering Limited | Private company limited by shares | Live |
| Sky Dragon Waterproof Limited | Private company limited by shares | Live |
| HONG KONG PANTHERS WATERPROOF TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| France JCDecaux Waterproof Company Limited | Private company limited by shares | Live |
| SINGAPORE WATERPROOF TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SKY WATERPROOFER & CONTRACTOR COMPANY LIMITED | Private company limited by shares | Live |
| YUE WO WATERPROOFING COMPANY LIMITED | Private company limited by shares | Live |
| ACHIEVE WATERPROOFING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ASIA WATERPROOFING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Chiu Lee Waterproofing Company Limited | Private company limited by shares | Live |
| SCIENTIFIC EPOXY INJECTION AND WATERPROOFING CONSULTANT LIMITED | Private company limited by shares | Live |
| Euro Pacific Waterproofing Limited | Private company limited by shares | Live |
| GENERAL WATERPUMP LIMITED | Private company limited by shares | Live |
| VITALITY WATERPURE LIMITED | Private company limited by shares | Live |
| WATERRA INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| WATERS LIMITED | Private company limited by shares | Live |
| HK WATERS CO. LIMITED | Private company limited by shares | Live |
| NEW WATERS LIMITED | | Live |
| Andaman Waters Group Company Limited | Private company limited by shares | Live |
| WATERS ASIA COMPANY LIMITED | Private company limited by shares | Dissolved |
| Calm Waters Finance Limited | | Live |
| WATERS CHINA LIMITED | Private company limited by shares | Live |
| Clapham Waters Limited | Private company limited by shares | Live |
| CLEAN WATERS LIMITED | Private company limited by shares | Live |
| PACIFIC WATERS CONSULTING LIMITED | Private company limited by shares | Live |
| WATERS ECONOMICS LIMITED | Private company limited by shares | Live |
| WATERS ECONOMICS LIMITED | Private company limited by shares | Live |
| Eiffel Waters Limited | Private company limited by shares | Live |
| Grey Waters Limited | Private company limited by shares | Live |
| HEALTH SPA WATERS LIMITED | Private company limited by shares | Dissolved |
| WATER'S ART (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| MINERAL HEALING WATERS CO. LIMITED | Private company limited by shares | Live |
| PANMOUR WATERS MINERAL POT CO. LIMITED | Private company limited by shares | Live |
| WATERS OVERSEAS LIMITED | Private company limited by shares | Dissolved |
| Victoria Waters Limited | | Live |
| China Water-saving Foundation Limited | Private company limited by shares | Dissolved |
| Time Waterscape Co., Limited | Private company limited by shares | Dissolved |
| WATERSENSE PACIFIC LIMITED | Private company limited by shares | Dissolved |
| WATERSHAN LIMITED | Private company limited by shares | Live |
| WATERSHEAD LIMITED | Private company limited by shares | Dissolved |
| WATERSIDE LIMITED | Private company limited by shares | Dissolved |
| WATERSIDE ASIA LIMITED | | Live |
| WATERSIDE INVESTMENTS LIMITED | Private company limited by shares | Live |
| WATERSMOOTH LIMITED | Private company limited by shares | Live |
| WATERSOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| Earthasia Watersource Limited | Private company limited by shares | Live |
| HOCHIHO WATERSPORTS LIMITED | Private company limited by shares | Live |
| WaterStar Technology Co., Limited | | Live |
| Waterstar Trade Co., Limited | Private company limited by shares | Dissolved |
| WATERSTAR INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Water-star Trading Company Limited | Private company limited by shares | Live |
| WATERSTOKE LIMITED | Private company limited by shares | Dissolved |
| WATERSTONE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Waterstone Limited | Private company limited by shares | Live |
| Waterstone HK Limited | | Live |
| WaterStone Capital HK Limited | Private company limited by shares | Live |
| WATERSTONES LIMITED | Private company limited by shares | Dissolved |
| Man Kwong Water-Tap Engineering Co., Limited | Private company limited by shares | Live |
| WATERTEC LIMITED | Private company limited by shares | Dissolved |
| Cyrus Watertec Limited | | Live |
| WATER-TECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| Eastelligent Water-Tech Limited | Private company limited by shares | Live |
| Watertet Technology (HK) Co., Limited | Private company limited by shares | Live |
| WATERTHINS LIMITED | Private company limited by shares | Live |
| WATERTIGHT LIMITED | Private company limited by shares | Dissolved |
| WATERTIGHT BIOTECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| ADVANCED WATERTIGHT SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| ADVANCED WATERTIGHT SOLUTIONS LIMITED | Private company limited by shares | Live |
| WaterTMT Limited | Private company limited by shares | Live |
| WATERTOP LIMITED | Private company limited by shares | Live |
| KAM LUI WATERTOURS COMPANY LIMITED | Private company limited by shares | Dissolved |
| KOWLOON WATERTOURS LIMITED | Private company limited by shares | Dissolved |
| WATERTOWER CAPITAL LIMITED | Private company limited by shares | Live |
| Watertowine Limited | | Live |
| WATERTOWN LIMITED | Private company limited by shares | Dissolved |
| WATERTOWN DEVELOPMENT LIMITED | Private company limited by shares | Live |
| WATERTOWN ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| HK JIANGNAN WATERTOWN GROUP TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |