Patents, what software do you draw?

Generally, 3D models are drawn by SolidWorks, Nx ug, proe and other 3D softwares. Then the patented two-dimensional line drawing is derived, and then the line optimization is done with CAD, cdr, ai and other plane software. , and add a hatch. If you still don't understand, you can search Baidu: Changning Changqi. Their company specializes in drawing patent drawings, hoping to help you.