- Wallpaper & Wall Coverings, Port Colborne
- Wallpaper & Wall Coverings Equipment & Supplies Stores, Port Colborne
- Wallpaper Installation Contractors, Port Colborne - Wallcovering Installation
- Warehousing & Storage, Port Colborne - Warehouse Services
- Washing Compounds, Port Colborne
- Waste & Refuse Services & Sites, Port Colborne
- Watch Repair, Port Colborne
- Watch, Clock & Jewelry Repair, Port Colborne
- Water Companies, Port Colborne
- Water Coolers & Water Companies - Bottled & Bulk, Port Colborne
- Water Transportation, Except Passenger, Port Colborne
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- Wedding & Bridal Services, Port Colborne
- Wedding Supplies & Bridal Shops, Port Colborne
- Welding & Welder, Port Colborne - Welding Supplies, Machines, Equipment, Services & Contractors
- Window Blinds - Venetian, Mini, Vertical, Roman, Port Colborne - Fabric, Roller, Bamboo & Wood Blinds
- Windshield, Port Colborne - Automobile
- Wine Making Equipment & Supplies, Port Colborne
- Wireless & Cellular Communications Equipment & Supplies, Port Colborne
- Women s Clothing Stores, Port Colborne - Clothes & Accessories
- Women's Fashion Accessories, Port Colborne - Handbags, Wallets, Scarves, Belts, Necklace, Bracelets, Earrings and more
- Wood Products Manufacturers, Port Colborne
- Wooden Boxes, Port Colborne - Box & Crates
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