Sioux Manufacturing Corporation's business base, beginning with its inception in 1973 through 1991, consisted of two main product lines built for the U.S. Army: the Lightweight Camouflage Screen System (LCSS) and the Kevlar® Ballistic PASGT Helmet. Since 1992, SMC has built a significant number of advanced composite parts for military use including secondary wing structures for Navy attack planes, door seals and fuel pods for military helicopters, wing baffles and floor panels for military aircraft, ventral fin/rudder assemblies and composite wing storage containers for reconnaissance drones, carbon composite structures for U.S. satellites, graphite sabots for tank-killer ammunition, composite stowage modules for artillery shells, and composite fuel cells for combat vehicles.

Through sustained efforts since the outset, SMC's technological capabilities have evolved over the years to include weaving, prepregging, autoclave molding, compression molding, water jet cutting, metal and composite material machining, metal cutting, and chemical conversion coating of metals. Depending on customer requirements, SMC also has the ability to bond composite laminates to steel, aluminum, and ceramic for added levels of ballistic protection as well as the skill and experience necessary to trim and attach hardware to the composite parts and armor produced.

As a result, SMC's primary business focus has expanded to include Composite Laminate Spall Liners, Woven Kevlar® Fabrics, Ablative Tile Laminates, Aircraft Armor, Helmet Pattern Sets and Advanced Composite Structures.