GKN Aerospace Chem-tronics manufactures aerospace components and offers aviation repair. It specializes in lightweight Unistructure and Unisandwich chemically milled titanium and aluminum alloy parts for engines, airframe structures and launch vehicles.The company produces such products as rings, cases and modules; ducts and compressor cases; avionics enclosures; exhaust nozzles and structures; doors, keels and bulkheads; sandwich structures; space systems; complex weldments; and pressure vessels. The company s process capabilities include chemical milling, forming, machining, design, engineering, heat treating, joining, assembly, inspection and advanced technologies such as superplastic forming, advanced creep forming, metal matrix composites, advanced chemical milling, diffusion bonding, plasma deposition and vacuum brazing. Its customers include Aerojet, Allison, Boeing, General Electric, Lockheed Martin, Pratt and Whitney, Rocketdyne and Rolls-Royce. GKN Aerospace Chem-tronics is a division of GKN Aerospace Transparency Systems, a branch of GKN, a supplier to automotive, off-highway and aerospace manufacturers. GKN Aerospace Chem-tronics is located in El Cajon, Calif.