Power and Communication Line and Related Structures Construction, Highway, Street, and Bridge Construction, Poured Concrete Foundation and Structure Contractors, Framing Contractors, Masonry Contractors

Electrical Contractors, Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers, Industrial Machinery and Equipment Merchant Wholesalers, Other Electronic and Precision Equipment Repair and Maintenance

Service Establishment Equipment and Supplies Merchant Wholesalers, Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers, Other Miscellaneous Durable Goods Merchant Wholesalers, Business to Business Electronic Markets, Wholesale Trade Agents and Brokers

Construction and Mining (except Oil Well) Machinery and Equipment Merchant Wholesalers, Farm and Garden Machinery and Equipment Merchant Wholesalers, Industrial Machinery and Equipment Merchant Wholesalers, Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers, Petroleum and Petroleum Products Merchant Wholesalers (except Bulk Stations and Terminals)

Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers

Flooring Contractors, Tile and Terrazzo Contractors, Nonwoven Fabric Mills, Carpet and Rug Mills, Other Millwork (including Flooring)

Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers

Plumbing, Heating, and Air-Conditioning Contractors, Other Electronic Parts and Equipment Merchant Wholesalers

Brick, Stone, and Related Construction Material Merchant Wholesalers, Roofing, Siding, and Insulation Material Merchant Wholesalers, Other Construction Material Merchant Wholesalers, Petroleum and Petroleum Products Merchant Wholesalers (except Bulk Stations and Terminals), Paint, Varnish, and Supplies Merchant Wholesalers

New Single-Family Housing Construction (except Operative Builders), Roofing Contractors, Electrical Contractors, Computer and Computer Peripheral Equipment and Software Merchant Wholesalers, Computer Systems Design Services

Home Furnishing Merchant Wholesalers, Drugs and Druggists' Sundries Merchant Wholesalers, Other Grocery and Related Products Merchant Wholesalers, Business to Business Electronic Markets

Water Supply and Irrigation Systems, New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders), Residential Remodelers, Industrial Building Construction

Photographic Equipment and Supplies Merchant Wholesalers, Office Equipment Merchant Wholesalers, Other Commercial Equipment Merchant Wholesalers, Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers, Other Professional Equipment and Supplies Merchant Wholesalers

Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers

Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers, Brick, Stone, and Related Construction Material Merchant Wholesalers, Roofing, Siding, and Insulation Material Merchant Wholesalers, Other Construction Material Merchant Wholesalers

Electrical and Electronic Appliance, Television, and Radio Set Merchant Wholesalers

Furniture Merchant Wholesalers, Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers, Brick, Stone, and Related Construction Material Merchant Wholesalers, Roofing, Siding, and Insulation Material Merchant Wholesalers, Other Construction Material Merchant Wholesalers

Automobile and Other Motor Vehicle Merchant Wholesalers, Motor Vehicle Supplies and New Parts Merchant Wholesalers, Tire and Tube Merchant Wholesalers, Motor Vehicle Parts (Used) Merchant Wholesalers, New Car Dealers

Site Preparation Contractors, Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing, Heavy Duty Truck Manufacturing, Motor Vehicle Body Manufacturing, Automobile and Other Motor Vehicle Merchant Wholesalers

Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers, All Other Health and Personal Care Stores, Offices of Physicians (except Mental Health Specialists), Medical Laboratories