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Use the Autodesk DirectConnect family of translators to exchange industrial design data with engineers using CAD software.
Exchange data between AutoCAD, Inventor, Alias, Dassault Systèmes SolidWorks and Catia system, PTC Pro/Engineer, Siemens PLM Software NX, JT, and certain other applications. For some systems, you must have the CAD product installed for it to work.
The data is imported as native solids Body objects that can be interactively retesselated, as needed. Refine the data until you get the precision you need in your renderings.