A product structure is just the assembly, sub-assembly and part, or raw material, hierarchy of a product.

You don’t have to define your product structures explicitly. They are deduced by analysing your product methods and, in turn, the methods of the assemblies they call up.

There is no limit to the number of assembly levels in your structure, and there is no limit to the number of components and processes in any level.

Here is an example of a partially exploded product structure: