Sigma Four

Sigma Four is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Electronic Equipment & Supplies Wholesale & Manufacturers
• Wire Harnesses Electrical

North American Industry Classification System (NAICS) Categories:

• Other Electronic Component Manufacturing
• Electrical Apparatus And Equipment, Wiring Supplies, And Related Equipment Merchant Wholesalers > Cable, Conduit & Wire > Wire Harnesses Electrical
• Other Electronic Parts And Equipment Merchant Wholesalers

Standard Industry Classification (SIC) Categories:

• Electronic Components, Nec
• Electrical Apparatus & Equipment > Cable, Conduit & Wire > Wire Harnesses Electrical
• Electronic Parts & Equipment > Electronic Equipment & Supplies