Sigma Technologies International, Inc. is a technology company that provides a broad range of products and services. Sigma manufactures innovative turnkey coating and surface treatment systems for functionalizing material surfaces, and for producing multilayer thin film coatings.

Functionalization and coating technologies include:
- Plasma treatment - atmospheric and vacuum
- Plasma grafting
- Vacuum Polymer coating
- Deposition of Metals and Oxides

Functionalization and coating equipment is produced to handle:
- Continuous webs of film, paper, foil and fabric.
- Batch coated glass metal and plastic substrates

Sigma designs and manufactures instrumentation for customers in the optics, packaging and energy storage markets. These include state of the art optical densitometers for measuring optical density, coating thickness, and electrical resistivity of thin films, specialty power supplies and partial discharge data acquisition and analysis systems.