| - Labor Organizations
- Laboratories - Research & Development
- Laboratory - Equipment & Supplies (Wholesale)
- Landscaping - Contractors
- Landscaping - Designers
- Landscaping - Services
- Lasers (Wholesale)
- Laundry & Garment Services
- Lawn & Grounds Maintenance
- Lawn Mowers - Sharpening & Repairing
- Leasing Equipment
- Leasing Service
- Legal - Service Plans
- Legal - Services
- Legislative Bodies
- Lessors - Miniwarehouses & Self - Storage Units
- Lessors - Residential Buildings & Dwellings
- Libraries - Public
- Lighting - Equipment - Emergency (Wholesale)
- Lighting Fixtures - Retail
- Limousine Service
- Linens - Retail
- Liquor - Retail
- Loading Dock Equipment (Wholesale)
- Loans
- Locks & Locksmiths
- Logging
- Logistics
- Lubricating Oils & Greases (Manufacturers)
- Lumber - Retail
- Lumber, Plywood, Millwork & Wood Panel (Wholesale)
- Machine Shops
- Machine Tools - Repairing & Rebuilding (Wholesale)
- Machinery - New (Wholesale)
- Machinery - Rebuilding & Repairing (Wholesale)
- Magicians
- Magnetic Resonance Imaging
- Maid & Butler Service
- Mail Order & Catalog Shopping
- Mailing & Shipping Services
- Maintenance Contractors
- Mammography
- Manicuring
- Manufacturers - Agents & Representatives
- Manufacturers
- Marble - Cultured (Wholesale)
- Marinas
- Marketing Consultants
- Marketing Programs & Services
- Marriage & Family Counselors
- Martial Arts Instruction
- Martial Arts Supplies & Equipment
- Masonry Contractors
- Massage Therapists
- Material Handling Equipment (Wholesale)
- Mattresses
- Measuring & Controlling Devices (Manufacturers)
- Meat - Retail
- Medical & Surgical Service Organizations
- Medical - Groups
- Medical - Laboratories
- Mens & Boys - Stores
- Mental Health Services
- Mergers & Acquisitions
- Messenger Service
- Metal - Forming Machinery (Manufacturers)
- Metal - Goods (Manufacturers)
- Metal - Stamping (Manufacturers)
- Metaphysical Supplies & Services
- Mexican & Latin American Food Products
- Microfilming Service Equipment & Supplies
- Miscellaneous - Retail Stores
- Mobile Homes - Parks & Communities
- Molds (Manufacturers)
- Monuments
- Motel & Hotel Equipment & Supplies (Wholesale)
- Motion Picture - Producers & Studios
- Motor & Generator (Manufacturers)
- Motor Vehicles - Supplies & New Parts (Wholesale)
- Motorcycles & Motor Scooters - Dealers
- Motorcycles & Motor Scooters - Repair & Service
- Motorcycles & Motor Scooters - Supplies
- Movers
- Mud Jacking Contractors
- Mufflers & Exhaust Systems - Engine
- Mulches
- Music & Live Entertainment
- Music - Instruction - Instrumental
- Musical Instruments - Dealers
- Musicians
- Nail Salons
- Nails & Tacks (Wholesale)
- Nature Centers
- Needlework & Needlework Materials - Retail
- New Single-Family Construction
- Newspaper - Publishers
- Non-Profit Organizations
- Nonclassifiable Establishments
- Notaries - Public
- Nurseries - Plants & Trees (Wholesale)
- Nursery & Tree Production
- Nurserymen
- Nurses & Nurse Registries
- Nursing & Convalescent Homes
- Nursing Homes - Management Service
- Office - Furniture & Equipment - Dealers (Wholesale)
- Office - Furniture & Equipment - Installation (Wholesale)
- Office - Physical, Occupational, Speech Therapist & Audiologist
- Office - Supplies & Stationery Stores
- Office - Supplies
- Offices - Real Estate Agents & Brokers
- Oil & Gas - Producers
- Oil - Additives (Manufacturers)
- Oil - Refiners (Manufacturers)
- Optical Goods - Retail
- Opticians
- Optometrists
- Organizations
- Other - Building Material Dealers
- Other - Communications Equipment (Manufacturers)
- Other - Gasoline Stations
- Other - Heavy & Civil Engineering Construction
- Other - Individual & Family Services
- Other - Justice, Public Order & Safety Activities
- Other - Management Consulting Services
- Other - Miscellaneous Durable Goods Merchant Wholesalers
- Other - Nonferrous Foundries - Except Die-Casting
- Other - Performing Arts Companies
- Other - Personal & Household Goods Repair & Maintenance
- Other - Personal Care Services
- Ovens - Industrial (Manufacturers)
- Oxygen - Medical (Wholesale)
- Packaging Containers (Manufacturers)
- Packaging Machinery (Wholesale)
- Packaging Materials (Manufacturers)
- Packaging Materials (Wholesale)
- Packaging Service
- Paging & Answering Service
- Paint - Retail
- Painters
- Painting Contractors - Commercial & Industrial
- Panelboards - Electric (Manufacturers)
- Paper - Products (Wholesale)
- Paperboard - Mills
- Parking Area & Lots Maintenance & Marking
- Party - Planning Service
- Party Supplies - Renting
- Party Supplies
- Paving Contractors
- Paving Equipment (Wholesale)
- Pennants (Wholesale)
- Periodical Publishers
- Personnel Consultants
- Pets - Boarding & Sitting
- Pets - Care (Except Veterinary) Services
- Pets - Photographers
- Pets - Shops Supplies (Wholesale)
- Pets - Shops
- Pets - Supplies & Foods - Retail
- Pets - Training
- Pets - Washing & Grooming
- Pets - Waste Removal
- Pharmaceutical - Products (Wholesale)
- Pharmacies & Drug Stores
- Photographers - Commercial
- Photographers - Passport
- Photographers - Portrait
- Photographic - Equipment & Supplies - Retail
- Photographic - Equipment - Repairing
- Photographs - Finishing - Retail
- Photography
- Physical Therapists
- Physicians & Surgeons - Equipment & Supplies (Manufacturers)
- Physicians & Surgeons - Equipment & Supplies (Wholesale)
- Physicians & Surgeons
- Physicians - Mental Health Specialists
- Pianos - Tuning Repairing & Refinishing
- Pianos
- Picture Frames - Dealers
- Pipe (Wholesale)
- Plastics - Extruders (Manufacturers)
- Plastics - Molders (Manufacturers)
- Plastics - Products - Finished (Manufacturers)
- Plastics - Raw Materials - Powder Resin (Manufacturers)
- Playground Equipment
- Plumbing - Contractors
- Plumbing - Fixtures & Supplies (Wholesale)
- Plumbing - Heating & Air-Conditioning Contractors
- Podiatrists
- Pointing - Brick Stone
- Police - Departments
- Police - Protection
- Political - Organizations
- Popcorn & Popcorn Supplies
- Post Offices
- Poured Concrete Foundation & Structure Contractors
- Powder - Coatings (Manufacturers)
- Power & Telephone Line & Related Construction
- Power - Distribution & Specialty Transformers (Manufacturers)
- Prepress Services
- Printer Cartridges
- Printers - Business Forms
- Printers
- Printing - Equipment - Repairing
- Product Development & Marketing
- Program Service - Educational
- Psychic Mediums
- Psychologists
- Publishers - Book
- Publishers - Directory & Guide
- Publishers - Periodical
- Publishing - Desktop
- Pumps & Pumping Equipment (Manufacturers)
- Pumps (Wholesale)
- Race Tracks
- Radiators - Heating (Manufacturers)
- Radio Stations & Broadcasting Companies
- Radio, Television & Other Electronics Stores
- Railroads
- Real Estate - Appraisers
- Real Estate - Consultants
- Real Estate - Credit
- Real Estate - Developers
- Real Estate - Inspection
- Real Estate - Investments
- Real Estate - Loans
- Real Estate - Management
- Real Estate - Services
- Real Estate
- Recording Studios
- Recreation Centers
- Recruiting - US Armed Forces
- Recyclable Material - Merchant Wholesalers
- Refractories
- Refrigeration Contractors
- Regulation & Administration - Electric, Gas & Other Utilities
- Rehabilitation Services
- Religious Organizations
- Rental Agencies
- Rental Service - Stores & Yards
- Rental Supplies (Wholesale)
- Repair Shops & Related Services
- Research & Development - Sciences & Humanities
- Residential - Care Homes
- Residential - Remodelers
- Restaurant Equipment & Supplies (Wholesale)
- Restaurants - American
- Restaurants - Asian
- Restaurants - Bagels
- Restaurants - Bakeries
- Restaurants - Cafe
- Restaurants - Chinese
- Restaurants - Coffee House
- Restaurants - Deli
- Restaurants - Desserts
- Restaurants - Donuts
- Restaurants - English
- Restaurants - Family Fare
- Restaurants - Fast Food
- Restaurants - Ice Cream
- Restaurants - Italian
- Restaurants - Japanese
- Restaurants - Mexican
- Restaurants - Pizza
- Restaurants - Steakhouse
- Restaurants - Thai
- Restaurants
- Resume Service
- Retail Shops
- Retail Stores - Florists
- Retail Stores - Music & Musical Instruments
- Retail Stores
- Retirement Communities & Homes
- Robots (Wholesale)
- Roofing - Contractors
- Roofing - Materials
- Rubber & Plastic Stamps
- Safes & Vaults (Wholesale)
- Safety Consultants
- Safety Equipment & Clothing (Manufacturers)
- Safety Equipment & Clothing (Wholesale)
- Sales Promotion Service
- Sandblasting Equipment & Supplies (Manufacturers)
- Sanitary Services
- Satellite - Equipment & Systems - Retail
- Savings & Loan Associations
- Schools & Educational Services
- Schools - Music
- Schools - Nursery & Kindergarten Academic
- Schools - Universities & Colleges Academic
- Scrap Metals & Iron (Wholesale)
- Scrapbook Albums & Supplies
- Screen Printing
- Screw Machine Products (Manufacturers)
- Secretarial & Court Reporting Services
- Security Control Equipment & Systems (Manufacturers)
- Security Control Equipment & Systems (Wholesale)
- Security Guard & Patrol Service
- Semiconductor Devices (Manufacturers)
- Senior Citizens - Counseling
- Senior Citizens - Service
- Septic Tanks & Systems - Cleaning & Repairing
- Service Establishments
- Service Stations - Gasoline & Oil
- Services - Financial Planning
- Services
- Sewer & Drain Cleaning - Service 7 Repair
- Sewer Construction Consultants
- Sewing Machines - Household
- Sewing, Needlework & Piece Goods Stores
- Shoe & Boot Repairing
- Shoes - Custom Made
- Shoes - Retail
- Shopping Service - Personal
- Showcase, Partition, Shelving & Locker (Manufacturers)
- Shower Doors & Enclosures
- Siding Contractors
- Signs & Advertising Specialties (Manufacturers)
- Signs (Manufacturers)
- Skating Rinks
- Snow - Removal Service
- Soccer Clubs
- Soccer Equipment & Supplies
- Social Services & Welfare Organizations
- Sod & Sodding Service
- Special Die & Tool, Die Set, Jig & Fixture (Manufacturers)
- Special Freight - Trucking - Local
- Special Freight - Trucking - Long-Distance
- Sporting & Recreational Supplies (Wholesale)
- Sporting Goods - Retail
- Sports - Instruction
- Sprinklers - Automatic - Fire (Wholesale)
- Sprinklers - Garden & Lawn - Retail
- Steel - Distributors & Warehouses
- Steel - Erectors
- Steel - Structural (Manufacturers)
- Stereophonic & High Fidelity Equipment - Dealers
- Stock & Bond Brokers
- Stone - Natural
- Storage - Containers
- Storage - Household & Commercial
- Store Fixtures (Wholesale)
- Store Fronts
- Supermarket - Other Grocery Stores
- Support Services
- Surveyors - Land
- Swimming Pools - Construction, Dealers & Designers
- Swimming Pools - Coping, Plastering & Tiling
- Switchgear & Switchboard Apparatus (Manufacturers)
- Synagogues
- T-Shirts - Retail
- Tailors
- Tanning Salons
- Tattooing
- Tax Preparation Services
- Tax Return Preparation & Filing
- Taxicabs & Transportation Service
- Taxidermists
- Technical Manual Preparation
- Telecommunications Services
- Teleconferencing Equipment
- Telephone - Companies
- Telephone - Equipment & Supplies
- Telephone - Equipment & Systems - Service & Repair
- Television - Program Producers - Services & Supplies
- Theatres - Live
- Theatres - Movie
- Theatrical & Stage Lighting (Manufacturers)
- Thrift Shops
- Ticket Service
- Tile - Ceramic - Contractors & Dealers
- Timing Devices (Wholesale)
- Tires - Dealers - Retail
- Title Companies
- Tool & Die Makers
- Tools (Wholesale)
- Topsoil
- Tours - Operators & Promoters
- Toys (Manufacturers)
- Toys - Retail
- Tractors - Dealers (Wholesale)
- Training Consultants
- Transit Lines
- Translation & Interpretation Services
- Transmissions - Automobile
- Travel - Agencies & Bureaus
- Tree Service
- Trophies - Awards & Medals
- Trucking - Local Cartage
- Trucking - Transportation Brokers
- Trucking
- Trucks - Canopies, Caps & Shells
- Trucks - Equipment & Parts (Wholesale)
- Trucks - Renting & Leasing
- Trucks - Repairing & Service
- Trusses - Wholesale & Manufacturers
- Tutoring
- Typesetting (Manufacturers)
- Uniform Supply Service
- Uniforms - Accessories
- Upholsterers
- Used Merchandise Stores
- Utility Contractors
- Vacuum Cleaners (Wholesale)
- Vacuum Cleaners - Household - Dealers
- Valves (Manufacturers)
- Valves (Wholesale)
- Variety Stores
- Vending Machines
- Venetian Blinds - Retail
- Ventilating Equipment (Wholesale)
- Ventilating Systems - Cleaning
- Veterans & Military Organizations
- Veterinarians
- Video Equipment - Service & Repair
- Video Games - Renting & Leasing
- Video Games
- Video Production & Taping Service
- Video Tapes & Discs - Duplication Service
- Video Tapes & Discs - Renting & Leasing
- Vitamins
- Voting Machines & Equipment (Wholesale)
- Wallpapers & Wallcoverings - Installation
- Waste - Management
- Water & Sewer Line & Related Structures Construction
- Water Companies - Bottled & Bulk
- Water Heaters - Repairing
- Water Softening Equipment Service & Supplies
- Water Treatment - Equipment Service & Supplies
- Waterproofing Contractors
- Wedding - Supplies & Services
- Weight Control Services
- Welding - Equipment & Supplies (Wholesale)
- Welding - Household Items - Repairing
- Welding - Industrial & Commercial
- Well Drilling
- Wholesalers
- Wholesale
- Wigs Toupees & Hairpieces
- Window Cleaning
- Window Treatment Stores
- Windows
- Wines (Wholesale)
- Wines - Brokers
- Wire Harnesses - Electrical (Wholesale)
- Womens Apparel - Retail
- Wood - Kitchen Cabinet & Countertop (Manufacturers)
- Woodworkers
- Wrecker Service
- Writers
- X-Ray - Apparatus & Tubes (Manufacturers)
- X-Ray - Laboratories - Medical
- X-Ray - Protection (Wholesale)
- Yoga Instruction
- Youth Organizations & Centers
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