STS Group AG is a supplier of components and systems for the commercial vehicle and automotive industry primarily in Germany, France, Mexico, and China. The company operates through three segments: Plastics, China, and Materials. It manufactures and sells interior systems and components, such as storage modules, including under bunk storage and upper shelf; exterior components comprising cab side modules, tailgates, rear lamp modules, and roof spoilers for trucks, commercial vehicles, and passenger cars; roof modules for trucks; and covers of battery system for electric vehicles. The company also offers plastic parts for the cabins for commercial vehicles, as well as bumpers, front panels, deflectors, roofs, fenders, and entrances; and develops and produces sheet molding compounds, fiber molding compounds, and advanced fiber molding compounds. In addition, it provides prototyping and logistics services. The company was founded in 2013 and is headquartered in Hagen, Germany. STS Group AG is a subsidiary of Adler Pelzer Holding GmbH.