Primary:

• 423420: Office Equipment Merchant Wholesalers
• 423430: Computer and Computer Peripheral Equipment and Software Merchant Wholesalers
• 423610: Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers
• 423710: Hardware Merchant Wholesalers
• 424990: Other Miscellaneous Non-durable Goods Merchant Wholesalers

Secondary:

• 423410: Photographic Equipment and Supplies Merchant Wholesalers
• 423440: Other Commercial Equipment Merchant Wholesalers
• 423450: Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
• 423620: Household Appliances, Electric Housewares, and Consumer Electronics Merchant Wholesalers
• 423690: Other Electronic Parts and Equipment Merchant Wholesalers
• 423830: Industrial Machinery and Equipment Merchant Wholesalers
• 424130: Industrial and Personal Service Paper Merchant Wholesalers
• 424920: Book, Periodical, and Newspaper Merchant Wholesalers
• 425120: Wholesale Trade Agents and Brokers
• 511210: Software Publishers
• 515120: Television Broadcasting
• 517911: Telecommunications Resellers
• 423420: Office Equipment Merchant Wholesalers
• 423430: Computer and Computer Peripheral Equipment and Software Merchant Wholesalers
• 423440: Other Commercial Equipment Merchant Wholesalers
• 423450: Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
• 511199: All Other Publishers
• 511210: Software Publishers
• 561421: Telephone Answering Services
• 611420: Computer Training
• 621420: Outpatient Mental Health and Substance Abuse Centers
• 423990: Other Miscellaneous Durable Goods Merchant Wholesalers
• 424110: Printing and Writing Paper Merchant Wholesalers
• 424120: Stationery and Office Supplies Merchant Wholesalers
• 423610: Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers
• 541511: Custom Computer Programming Services
• 541512: Computer Systems Design Services