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Product data of complex technical equipment is difficult to capture and use in digital planning tools in the context of building information modelling. In Germany, the VDI 3805 is a sophisticated specification format to describe technical MEP and HVAC equipment and other engineering de-vices. Thousands of products such as heat pumps, chillers, have been described from companies such as Viessmann, Hilti, Trox, Oventrop and others.