If you want to buy CAD software for your start up then you should buy that kind of software which have so many features and at the...
I am using the ActCAD software which is converting the pdf to dwg for free.
You can dowload it.
There are number of 2D CAD Softwares are there which is being used by Engineers i.e ActCAD, AutoCAD, NanoCAD etc.
You can try ActCAD...
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