Electronic Computer Manufacturing, Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Other Communications Equipment Manufacturing, Audio and Video Equipment Manufacturing, Printed Circuit Assembly (Electronic Assembly) Manufacturing

Plumbing, Heating, and Air-Conditioning Contractors, Other Communications Equipment Manufacturing, Other Miscellaneous Durable Goods Merchant Wholesalers, Security Systems Services (except Locksmiths)

Electrical Contractors, All Other Specialty Trade Contractors, Other Communications Equipment Manufacturing

Other Communications Equipment Manufacturing, Other Lighting Equipment Manufacturing, All Other Miscellaneous Electrical Equipment and Component Manufacturing, All Other Transportation Equipment Manufacturing, Photographic Equipment and Supplies Merchant Wholesalers

Telephone Apparatus Manufacturing, Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Other Communications Equipment Manufacturing

Other Fabricated Wire Product Manufacturing, Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Other Communications Equipment Manufacturing, Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use, Other Scientific and Technical Consulting Services