Power and Communication Line and Related Structures Construction, Communication Equipment Repair and Maintenance

Computer and Office Machine Repair and Maintenance, Communication Equipment Repair and Maintenance, Other Electronic and Precision Equipment Repair and Maintenance

Other Airport Operations, Other Support Activities for Air Transportation, Communication Equipment Repair and Maintenance

Electrical Contractors, All Other Information Services, Communication Equipment Repair and Maintenance

Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Other Electronic Parts and Equipment Merchant Wholesalers, Consumer Electronics Repair and Maintenance, Communication Equipment Repair and Maintenance

Electrical Contractors, Office Equipment Merchant Wholesalers, Wired Telecommunications Carriers, All Other Information Services, Telephone Answering Services

All Other Specialty Trade Contractors, Computer Systems Design Services, Computer Facilities Management Services, Other Computer Related Services, Communication Equipment Repair and Maintenance

Electrical Contractors, Security Systems Services (except Locksmiths), Communication Equipment Repair and Maintenance

Photographic Film, Paper, Plate, and Chemical Manufacturing, Office Equipment Merchant Wholesalers, Other Electronic Parts and Equipment Merchant Wholesalers, Office Machinery and Equipment Rental and Leasing, Communication Equipment Repair and Maintenance

Water Supply and Irrigation Systems, Sewage Treatment Facilities, Steam and Air-Conditioning Supply, New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders)

Porcelain Electrical Supply Manufacturing, Optical Instrument and Lens Manufacturing, Semiconductor and Related Device Manufacturing, Electronic Capacitor Manufacturing, Electronic Resistor Manufacturing

Communication Equipment Repair and Maintenance

Industrial Valve Manufacturing, Fluid Power Valve and Hose Fitting Manufacturing, Fluid Power Cylinder and Actuator Manufacturing, Fluid Power Pump and Motor Manufacturing, Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufactur

Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Radio Networks, Communication Equipment Repair and Maintenance

Power and Communication Line and Related Structures Construction, Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Engineering Services, Computer Systems Design Services, Administrative Management and General Management Consulting Services

Process, Physical Distribution, and Logistics Consulting Services, Security Guards and Patrol Services, Communication Equipment Repair and Maintenance

All Other Plastics Product Manufacturing, Metal Stamping, Sheet Metal Work Manufacturing, Electroplating, Plating, Polishing, Anodizing, and Coloring, Electronic Computer Manufacturing

Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Other Electronic Parts and Equipment Merchant Wholesalers, Consumer Electronics Repair and Maintenance, Communication Equipment Repair and Maintenance

Communication Equipment Repair and Maintenance

Computer Facilities Management Services, Other Computer Related Services, Administrative Management and General Management Consulting Services, Other Management Consulting Services, Other Scientific and Technical Consulting Services

Printed Circuit Assembly (Electronic Assembly) Manufacturing, Other Electronic Component Manufacturing, Relay and Industrial Control Manufacturing, Fiber Optic Cable Manufacturing, Current-Carrying Wiring Device Manufacturing

Power and Communication Line and Related Structures Construction, Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Other Communications Equipment Manufacturing, Business to Business Electronic Markets, Wired Telecommunications Carriers

Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Other Communications Equipment Manufacturing, Other Electronic Component Manufacturing, Computer and Computer Peripheral Equipment and Software Merchant Wholesalers, Software Publishers

Electrical Contractors, Satellite Telecommunications, Consumer Electronics Repair and Maintenance, Computer and Office Machine Repair and Maintenance, Communication Equipment Repair and Maintenance

Other Building Equipment Contractors, Telephone Apparatus Manufacturing, Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Power, Distribution, and Specialty Transformer Manufacturing, Computer and Computer Peripheral Equipment and Software Merchant Wholesalers