Siemens PLM Software, a business unit of the Siemens Industry Automation Division and a leading global provider of product lifecycle management (PLM) software and services, and ZWCAD Software Co. Ltd., a leading provider of computer-aided design (CAD) products, today announced the licensing by ZWCAD of Siemens PLM Software's D-Cubedâ„¢ software for use in ZWCADTM Professional software.