What documents do I need to apply for to open a small mechanical processing factory?

Go to the industrial and commercial bureau to register the business license first.

Machines need lathes, planers, drilling machines, milling machines and welding machines. If it's not too complicated to handle, it's basically ok. Yes, we need to buy some machine tool accessories and tools.

The capital is about/kloc-0.5 to 200,000, depending on the quality of the machine tool you bought. I hope so. Thank you. Good luck.