- Safety Equipment & Supplies, Drummondville
- Sales & Marketing Consultant, Drummondville
- Sand Gravel & Aggregate, Drummondville
- Sandblasting, Drummondville - General Contractors
- Sandwich Shop Restaurants, Drummondville
- Scaffolding & Aerial Lifts, Drummondville
- School Furniture, Drummondville
- Scientific & Laboratory Equipment & Instruments, Drummondville
- Scrap & Waste Materials, Drummondville
- Scrapbooks & Scrapbook Supplies, Drummondville
- Secondary Schools, Drummondville
- Security Alarm Systems - Home & Business, Drummondville
- Security Guard & Patrol Service, Drummondville - Bodyguard, Guard Dogs, Etc
- Security Investigative Services, Drummondville
- Security Services, Drummondville
- Semi Precious Metals, Drummondville
- Senior Citizens Service & Health Organizations, Drummondville
- Septic Tank Pumping & Cleaning, Drummondville - Septic Systems
- Septic Tanks & Systems, Drummondville - Wholesale, Dealers & Suppliers
- Service & Gas Station Equipment & Services, Drummondville
- Service Establishment Supplies & Equipment, Drummondville
- Sewing & Yarn Stores & Supplies, Drummondville
- Sewing Machine Repair & Service, Drummondville
- Sewing Machines, Equipment & Supplies, Drummondville
- Sharpening Service, Drummondville
- Sheet Metal Contractors, Drummondville - Sheet Metal Fabrication
- Sheet Metal Fabricators & Ductwork Contractors, Drummondville
- Shirts & T-Shirts, Drummondville
- Shoe Repair & Shoeshine Parlors, Drummondville
- Shoe Repair Shops, Drummondville
- Shoe Store - More, Drummondville
- Shoe Stores, Drummondville - Mens, Womens & Kids Shoes
- Shopping & Shopping Services, Drummondville
- Shutters - Interior & Exterior, Drummondville - Wood, Vinyl, Window, Plantation Shutters, etc
- Siding Materials, Drummondville
- Signs, Drummondville
- Silk Screen Printing, Drummondville
- Silkscreen Printing, Drummondville
- Silos & Equipment, Drummondville
- Singing & Vocal Training Schools, Drummondville
- Skating Supplies, Drummondville - Ice, Inline, Speed, Figure & Roller Skates
- Ski Equipment & Supplies Shops, Drummondville - Skiing Helmets, Goggles, Clothes, Boots, Gear & Accessories
- Ski Equipment Repair, Drummondville
- Sleep Doctors, Drummondville - Specialists, Physicians & Surgeons (Sleep Medicine)
- Small Appliances, Drummondville
- Smoking Cessation Treatment Centers & Information Services, Drummondville
- Snack Foods, Drummondville
- Snacks & Desserts, Drummondville
- Snow Equipment & Supplies, Drummondville
- Snow Removal Services, Drummondville - Snow Plow Service
- Snowmobile Dealers, Drummondville - Parts, Gear, Clothing & Accessories
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- Snowmobile Equipment & Supplies, Drummondville
- Soccer Clubs, Drummondville
- Social Clubs & Organizations, Drummondville
- Social Services & Welfare, Drummondville
- Societies & Foundation Associations, Drummondville
- Solar Equipment, Drummondville
- Sound Systems, Microphones & Equipment, Drummondville
- Special Education & Care, Drummondville
- Special Events & Party Supply Rental, Drummondville
- Special Events Photographers, Drummondville
- Special Interest Schools Or Instruction, Drummondville
- Speciality Food Stores, Drummondville
- Specialty Goods Storage, Drummondville
- Specialty Stores, Drummondville
- Speech & Hearing Specialists, Drummondville
- Speech & Language Therapy, Drummondville
- Speed Reducers, Drummondville
- Sporting Goods Equipment Rental, Drummondville
- Sporting Goods Stores, Drummondville
- Sports & Recreational Services, Drummondville
- Sports Clubs, Drummondville
- Sports Promoters & Managers, Drummondville
- Sports Promotions & Special Events, Drummondville
- Sportswear Clothing Stores, Drummondville - Sports Clothes
- Staffing & Support Services, Drummondville
- Stainless Steel, Drummondville
- Stationery & Office Supplies, Drummondville
- Steel & Metal Goods, Drummondville - Steel Distributors
- Steel Fabrications Specialties, Drummondville
- Steel Manufacturers, Drummondville
- Steel Mills & Blast Furnaces, Drummondville
- Steel Used, Drummondville
- Stone & Rock Quarry, Drummondville - Gravel Pit, Shale, Granite, Limestone, Crushed Rock, etc
- Store & Retail Fixtures & Display Manufacturers, Drummondville
- Stoves, Ovens, Ranges & Cooktops, Drummondville
- Stress Management & Counseling, Drummondville
- Stucco Stone, Drummondville
- Substance Abuse Clinics, Drummondville - Alcoholism, Addiction & Drug Abuse Treatment Centers
- Substance Abuse Outpatient Clinics, Drummondville
- Sugar Refiners, Drummondville
- Suicide Prevention Service & Counseling, Drummondville
- Sunroom & Solarium Construction Contractors, Drummondville
- Surveyor Services, Drummondville - Surveying Service
- Surveyors, Drummondville
- Sushi Restaurants, Drummondville
- Sweepers & Scrubbers Industrial, Drummondville - Sweeping Service
- Swimming Lessons & Classes, Drummondville
- Swimming Pool, Sauna & Spa Contractors, Drummondville
- Swimming Pools Contractors, Drummondville - Install Inground - Above Ground Pools
- Swimming Pools Supplies, Equipment & Accessories, Drummondville
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