| [423310] Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers |
| [423320] Brick, Stone, and Related Construction Material Merchant Wholesalers |
| [423330] Roofing, Siding, and Insulation Material Merchant Wholesalers |
| [423390] Other Construction Material Merchant Wholesalers |
| [423420] Office Equipment Merchant Wholesalers |
| [423430] Computer and Computer Peripheral Equipment and Software Merchant Wholesalers |
| [423440] Other Commercial Equipment Merchant Wholesalers |
| [423490] Other Professional Equipment and Supplies Merchant Wholesalers |
| [423510] Metal Service Centers and Other Metal Merchant Wholesalers |
| [423610] Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers |
| [423620] Electrical and Electronic Appliance, Television, and Radio Set Merchant Wholesalers |
| [423710] Hardware Merchant Wholesalers |
| [423720] Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers |
| [423730] Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers |
| [423740] Refrigeration Equipment and Supplies Merchant Wholesalers |
| [423810] Construction and Mining (except Oil Well) Machinery and Equipment Merchant Wholesalers |
| [423820] Farm and Garden Machinery and Equipment Merchant Wholesalers |
