PTA GmbH has been involved in the development of IT solutions in systems and mechanical engineering since its beginnings. Applications and processes are developed and supported, particularly in individual production and for handling projects in large-scale systems construction. In addition to the support and further development of standard systems selected and used by our customers, interfaces are provided between the various software products and to the systems of partners. Special mention should be made of the support for collaboration with suppliers and subcontractors in the context of major international projects, e.g. in power systems construction.