Founded in 2003, case4de is a medium-sized engineering firm headquartered in Hamburg, Germany with regional offices and service support worldwide. The company's core business is specifically tailored to meet the needs of OEMs in the mass-transit industry as they pertain to the precision, computer-aided design of systems and the fault-free fit of components. Starting with a customized feasibility study for our clients, case4de has a proven reputation of leading congruent engineering solutions between OEMs and suppliers -- a model that guarantees zero-rework of computer-aided designs. This business model is further enhanced by an overarching philosophy that encompasses the design of a vehicle in its entirety, rather than focusing solely upon single systems or individual components. case4de is certified to DIN EN 9100 : 2009, technically equivalent to AS 9100 and JISQ 9100, and exceeds the aerospace requirements of this high industry standard. As a member of Hanseatic Engineering & Consulting Association e.V. (HECAS), as well as Hanse Aerospace we are a part of the capability network of Hamburg.