| U.B.M. BUILDING MATERIALS SUPPLY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UCfloor Building Material (China) Co., Limited | Private company limited by shares | Live |
| UIMIX BUILDING MATERIALS CO., LIMITED | Private company limited by shares | Live |
| ULTRA RIGID BUILDING CONTRACTORS LIMITED | Private company limited by shares | Dissolved |
| UMIX BUILDING MATERIAL LIMITED | Private company limited by shares | Dissolved |
| UNIK BUILDING MATERIAL COMPANY LIMITED | Private company limited by shares | Live |
| YINGSHENG INT'L BUILDING MATERIALS HOME UNION LIMITED | Private company limited by shares | Live |
| UNIQUE BUILDING MATERIALS CO., LIMITED | Private company limited by shares | Live |
| CHINA UNITED BUILDING MATERIALS CO. LIMITED | Private company limited by shares | Dissolved |
| UNITED T.C. BUILDING MATERIALS (CHINA) LIMITED | Private company limited by shares | Dissolved |
| UNITED BUILDING CONTRACTORS LIMITED | Private company limited by shares | Live |
| UNITED BUILDING DESIGN LIMITED | Private company limited by shares | Live |
| UNITED BUILDING RENOVATION LIMITED | Private company limited by shares | Dissolved |
| STAR UNITED BUILDING MATERIALS LIMITED | Private company limited by shares | Dissolved |
| UNITED TECHNOLOGY (ASIA) BUILDING MATERIALS CO. LIMITED | Private company limited by shares | Dissolved |
| UNITISED BUILDING (HONG KONG) INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIVERSAL BUILDING ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL BUILDING MATERIAL HK LIMITED | Private company limited by shares | Live |
| Universal Building Material Trading Limited | | Live |
| UNIVERSAL BUILDING MATERIALS LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL BUILDING MATERIALS LIMITED | Private company limited by shares | Live |
| UNIVERSAL (BOULDERS) BUILDING MATERIALS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL BUILDING MATERIALS SUPPLY LIMITED | Private company limited by shares | Live |
| UNIVERSAL BUILDING PRODUCTS LIMITED | Private company limited by shares | Live |
| UNIVIC BUILDING CONTRACTORS LIMITED | Private company limited by shares | Live |
| Upper Living (HK) Green Building Material Limited | | Live |
| URBAN IMPRESSION (HONG KONG) BUILDING DECORATION ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| YEE SUN URBAN PLANNING & BUILDING DESIGN (HK) LIMITED | Private company limited by shares | Dissolved |
| U-VIEW Metal Building Materials Limited | Private company limited by shares | Live |
| VANTAGE INTELLIGENT BUILDING HONG KONG LIMITED | Private company limited by shares | Dissolved |
| Foshan Vanto Building Materials Co., Limited | Private company limited by shares | Live |
| SESTONES ASSET BUILDING VENTURES LIMITED | Private company limited by shares | Dissolved |
| VENUS BUILDING MATERIALS LIMITED | Private company limited by shares | Live |
| Verdicasa Building Materials Limited | Private company limited by shares | Live |
| VICWOOD BUILDING PRODUCTS COMPANY LIMITED | Private company limited by shares | Live |
| Vinshells Building Materials Co., Limited | Private company limited by shares | Live |
| VINTOP BUILDING MATERIALS LIMITED | Private company limited by shares | Dissolved |
| VIRONY BUILDING MATERIALS CO., LIMITED | Private company limited by shares | Dissolved |
| Visador Building Products Limited | Private company limited by shares | Dissolved |
| vvital building materials furniture co., Limited | Private company limited by shares | Live |
| WALLKING INTERNATIONAL NEW BUILDING MATERIALS CO., LIMITED | Private company limited by shares | Live |
| Walton Building Materials (HK) Limited | Private company limited by shares | Live |
| WANAEL BUILDING MATERIAL LIMITED | Private company limited by shares | Live |
| WANDA BUILDING MATERIALS GROUP LIMITED | Private company limited by shares | Live |
| WANG KEE BUILDING CONTRACTORS LIMITED | Private company limited by shares | Dissolved |
| FRANCE SHENG LUO DI WANG BUILDING MATERIALS HOME INT'L LIMITED | Private company limited by shares | Dissolved |
| ZIBO WANGSHUN BUILDING MATERIALS CO., LIMITED | | Live |
| Germany Wanjiaxing New Building Materials Group Limited | Private company limited by shares | Live |
| WANNENG BUILDING MATERIALS TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| MING FUNG SANITARY WARES & BUILDING MATERIALS COMPANY LIMITED | Private company limited by shares | Dissolved |
| First Warrior Building Material Trading Limited | Private company limited by shares | Live |
| WAH DIG STOCKADE BUILDING WATER & ELECTRIC ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| GUANGZHOU DEZHIGAO WATERPROOF BUILDING MATERIALS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| NYLWB WATERPROOF BUILDING MATERIALS (GUANGDONG) LIMITED | Private company limited by shares | Live |
| SHENZHEN PANTHERS WATERPROOF BUILDING MATERIALS LIMITED | Private company limited by shares | Live |
| SOUTH YUHONG WATERPROOF TECHNOLOGY ENVIRONMENTAL PROTECTION BUILDING MATERIALS LIMITED | Private company limited by shares | Live |
| TEXSA WATERPROOFING BUILDING MATERIALS (ASIA PACIFIC) LIMITED | Private company limited by shares | Dissolved |
| Wan Fung Technology Building Inspection & Waterproofing Engineering Limited | | Live |
| WATSON BUILDING MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| BUILDING WEALTH LIMITED | Private company limited by shares | Live |
| WEALTHY BUILDING COMPANY LIMITED | | Live |
| WEBSTER BUILDING SUPPLIES LIMITED | Private company limited by shares | Dissolved |
| HK WEIDI BUILDING POTTERY LIMITED | Private company limited by shares | Dissolved |
| WEIJUN BUILDING PRODUCTS (GUANGZHOU) LIMITED | Private company limited by shares | Live |
| FOSHAN WEILUOSI BUILDING MATERIALS LIMITED | Private company limited by shares | Live |
| WEITUO INT'L BUILDING MATERIALS CO., LIMITED | Private company limited by shares | Dissolved |
| WEIXING BUILDING MATERIALS COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHINA WELL BUILDING INSTITUTE LIMITED | Company limited by guarantee | Live |
| WELLINK BUILDING MATERIALS COMPANY LIMITED | Private company limited by shares | Live |
| WELL-WAY BUILDING MATERIAL LIMITED | Private company limited by shares | Dissolved |
| WENAN JINKAI BUILDING MATERIAL CO LIMITED | Private company limited by shares | Live |
| Guo Weng (Universal) Building Materials Limited | | Live |
| WEST BUILDING SOLUTIONS CO., LIMITED | Private company limited by shares | Live |
| WEST POINT BUILDING COMPANY LIMITED -THE- | Private company limited by shares | Dissolved |
| WHALE BUILDING INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| One Wide Building Company Limited | Private company limited by shares | Live |
| WIDE SMART BUILDING MATERIALS (TRADING) COMPANY LIMITED | Private company limited by shares | Dissolved |
| WIDESPREAD BUILDING MATERIALS COMPANY LIMITED | Private company limited by shares | Live |
| WILLIC BUILDING MATERIALS LIMITED | Private company limited by shares | Dissolved |
| BUILDING WINDOW INSPECTION LIMITED | Private company limited by shares | Live |
| HK Building & Window Inspection Association Limited | Private company limited by shares | Live |
| WINFAT BUILDING SERVICE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| WINFULAI BUILDING CONSTRUCTION LIMITED | Private company limited by shares | Dissolved |
| WINFULAI BUILDING MATERIALS SUPPLIERS LIMITED | Private company limited by shares | Dissolved |
| WING LEE BUILDING CO. LIMITED | Private company limited by shares | Live |
| WING ON BUILDING CONTRACTORS COMPANY, LIMITED | Private company limited by shares | Dissolved |
| WING FU BUILDING CONTRACTORS LIMITED | Private company limited by shares | Live |
| Winland Building Management Limited | Private company limited by shares | Live |
| Winland Building Materials Limited | | Live |
| East Winner Building Construction Company Limited | Private company limited by shares | Live |
| WINNER BUILDING MATERIALS AND ELECTRICAL COMPANY LIMITED | | Live |
| WINTECH BUILDING CONSTRUCTION LIMITED | Private company limited by shares | Live |
| WinTech Building Materials Limited | Private company limited by shares | Live |
| WINTON BUILDING MATERIALS CO., LIMITED | Private company limited by shares | Live |
| SANGE BUILDING MATERIAL WIRE MESH CO., LIMITED | Private company limited by shares | Live |
| W.M. BUILDING MATERIALS LIMITED | Private company limited by shares | Dissolved |
| WONG KUN BUILDING CONTRACTOR LIMITED | Private company limited by shares | Dissolved |
| EAST WOOD BUILDING & CONSTRUCTION LABOUR SUPPLIES LIMITED | Private company limited by shares | Dissolved |
| WOODSGOLD BUILDING MATERIAL CO., LIMITED | Private company limited by shares | Live |
| WOODY BUILDING MATERIALS SUPPLY COMPANY LIMITED | Private company limited by shares | Live |