It is not clear what you mean by "CAD information." CAD typically stands for Computer-Aided Design, which is a software used by designers and engineers to create 2D and 3D models. This software allows users to design, analyze, and visualize products before they are built. If you are referring to where to find CAD information or files, there are various sources depending on what you are looking for. Designers and manufacturers often provide CAD files on their websites for specific products. Additionally, there are online repositories and communities where people share CAD models and files, such as GrabCAD or Thingiverse. Finally, some professional libraries or educational institutions may have CAD information available for research or educational purposes.