O'Brien

Ryerson is one of the leading distributors and processors of metals in North America. Headquartered in Chicago, it operates service centers throughout the United States and Canada, as well as serves customers in Mexico, India and China. The company offers processing and fabrication services. It also provides sheets, coils, plates, bars, tubing and pipes in stainless steel, aluminum, nickel, brass and copper materials. Ryerson maintains a location in Maryland Heights, Mo.

Essex Manufacturing is a full service component engineering and manufacturing facility. Based in St. Louis, Mo., the company offers a range of components, such as specialty valves and quick disconnects, pilot flight control stick grip assemblies and hydraulic surge suppressors, to name a few. It also possesses a complete anodize department that supplies chromic anodize, type III finish seals, hardcoat, electropolish, penetrant inspection and other special services. Essex Manufacturing is ISO 9001:2008 certified and is authorized by the American Society of Mechanical Engineers.