Northern Technologies International Corporation develops and markets proprietary, environmentally beneficial products and services in over 65 countries. The Company’s primary business is corrosion prevention, marketed mainly under the ZERUST brand. It has been selling its proprietary ZERUST products and services to the automotive, electronics, electrical, mechanical, military, and retail consumer markets. It offers worldwide on-site technical consulting for rust and corrosion prevention issues. Its technical service consultants work directly with the end users of its products to analyze their specific needs and develop systems to meet their technical requirements. It also markets and sells a portfolio of bio-based and biodegradable polymer resin compounds and finished products marketed under the Natur-Tec brand. Its ZERUST rust and corrosion-inhibiting products include plastic and paper packaging, liquids, coatings, rust removers, cleaners, and diffusers.