Shadin Avionics

Twin City Fan & Blower, founded in 1970s, is one of the leading designers and manufacturers of commercial and industrial fans. Its product line includes centrifugal fans and blowers, axial fans, and power roof ventilators, with units ranging in size from one-fourth horsepower exhaust fans to 1750 horsepower heavy industrial units. The company supplies ventilation fans for retail and office buildings, restaurants, schools, hospitals, and government buildings. Its industrial fan applications include air and material handling, air cleaning, ventilation, cooling, heating, combustion air supply, filtration and drying systems, fume hoods, spray-paint booths, and exhaust systems. The company also offers special materials, construction, coatings, and accessories to suit any application requirements. Twin City Fan & Blower is a division of Twin City Fan Companies. The company is headquartered in Minneapolis, and has its manufacturing facilities in South Dakota.

Established over 50 years ago, Lake Engineering Inc. produces precision machine parts and assemblies for customers in the aerospace industry. Based in Long Lake, Minn., the company provides a wide range of products, including castings, assemblies, hogouts and forgings. Lake Engineering Inc. is an ISO 9001:2008 and AS9100 Rev B certified company. Boeing awarded Lake Engineering Inc. with the 2008 Performance Excellence Award and Rockwell Collins named the firm as Machined Metal Commodity Supplier of the Year in 2010.