3D models are an exact representation of a product and allow precise control over the design and design intent. Companies often have a design database consisting of hundreds or thousands of 2D drawings representing their products and while these drawings allow for business as usual, new products or modifications to existing products become difficult and time consuming to create.
PDS can take your 2D drawings and accurately create 3 dimensional models in the design software package of your choice (PTC Creo, Solidworks, and Autodesk Inventor are the most common).