Sigma Four Inc., Employee Directory

Appliances, Electrical, and Electronics ManufacturingTexas, United States2-10 Employees

Sigma Four Inc. is a small manufacturing firm based in Plano, Texas, with roots extending back to 1984. The company provides contract manufacturing for electrical components, including custom cable assemblies, electrical harnesses, and power supplies, as well as medical products, value-added services, and prototype systems. It adheres to ISO 9002 quality management standards and focuses on meeting customers’ distinctive requirements.

Its client base includes organizations seeking tailored production solutions and it can interpret specifications from drawings, prints, samples, schematics, or even verbal instructions. As a locally rooted supplier with the ability to engage with both local and international manufacturers, Sigma Four supports global needs and emphasizes timely delivery. Based in Plano and operating with a small workforce, Sigma Four concentrates on reliability and quality in its offerings.

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