Sigma Four Inc. is based in Plano, Tx, since 1984. Our Quality Mangement systems are AS9100D/ISO 9001:2015 Certified. Our specialization includes contract manufacturing of custom cable assemblies and electrical harnesses, power supplies, medical products and services, value added and kitting services, development of prototype systems. We take pride in our focus on quality and our dedication to meeting our customers’ unique requirements. We will work with you to meet your requirements from drawings, prints, sample assemblies, schematics, verbal instructions. We are a local company who can help you meet your global needs. Our model allows us to work with local and global manufacturers.
We at Sigma Four strive to achieve excellence and on-time delivery in all our product offerings. Our goal is to:
Provide a cost-effective solution to assembly needs, packaging services and import/export services, while adhering to highest customer standards.
SIGMA FOUR IS A MINORITY OWNED AND OPERATED BUSINESS
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