When developing and revising products, a wide variety of engineers usually work together. Such heterogeneous development teams often work on the same product but with different models. Typically, each team works on its own partial version of a specific product. At the same time, finding the right components for each subsystem is another challenge. The technical data sheets are often only available as PDF files. This makes it difficult to access the data they contain by machine. Furthermore, there is no standardized designation of product properties across the various manufacturers. The joint research project “Fluid 4.0” is working on standardized semantics for fluid power technology. Among other things, existing standards such as “ECLASS” are utilized. This means that a certain basic stock of properties is already available. At the same time, the list of properties is analyzed initially, and missing features are detected. This publication will show how these extended semantics can be used to create administration shells for aggregated systems. To this end, selected aspects of the specific extension of the semantics are explained. During the project, it is planned to submit this extension as a proposal to the standardization committees in order to provide a coordinated, machine-readable database for development processes. An important point here is the linking of the individual components to form an aggregated system. For this purpose, a proposal for the creation of asset administration shells for aggregated systems is explained. The versioning and access control mechanisms of the administration shells make them ideal as a single source of truth for the collaborative development of complex, mechatronic systems. All of this is discussed using simplified examples.