- Painters, Windsor - Painting Contractors
- Paper & Cardboard Manufacturers, Windsor
- Paper Finishers Manufacturers, Windsor
- Passenger Vehicle Dealers, Windsor
- Personal Care, Windsor
- Personal Credit Institutions & Services, Windsor
- Personal Services, Windsor
- Pharmacy & Drug Stores, Windsor - Drugstore - Chemists
- Pizza Restaurant 1 Of 2, Windsor
- Plants, Trees, Flowers & Seeds, Windsor
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- Plumbers & Plumbing Contractors, Windsor - Installation, Repair & Replace Services
- Plumbing - Sewer & Drain Cleaning & Repair, Windsor
- Power Transmission Equipment, Windsor
- Printers Services, Windsor
- Printing Equipment Repair & Service, Windsor
- Product Rental & Leasing, Windsor
- Propane Gas Sales & Service, Windsor
- Public Accountants, Windsor
- Publishing & Printing Manufacturers, Windsor
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