Northern Technologies International Corporation develops, markets, and sells rust and corrosion inhibiting products and services to the automotive, electronics, electrical, mechanical, military, retail consumer, and oil and gas markets under the ZERUST brand name. The company also sells a portfolio of bio-based and biodegradable polymer resin compounds and finished products under the Natur-Tec brand. Its ZERUST rust and corrosion inhibiting products include plastic and paper packaging, liquids and coatings, rust removers and cleaners, diffusers, and variations of these products designed for the oil and gas industry. The company also offers on-site technical consulting for rust and corrosion prevention issues. The company sells its products and services through a direct sales force and subsidiary, as well as through a network of independent distributors and agents, manufacturer's sales representatives, strategic partners, and joint venture arrangements primarily in the North America, South America, Europe, Asia, and the Middle East. Northern Technologies International Corporation was founded in 1970 and is headquartered in Circle Pines, Minnesota.