Italian to English Tech/Engineering Manufacturing

This is the heading of part of document describing a machine.
Basically it is a part list showing the name of the part, the code, and manufacturer.

So, the list reports the parts/components used by the manufacture to build the machine. I imagine the "di commercio" part is a way to say that the part is bought and not manufactured by the company making the machine.

Is "parts list" or "list of components" enough? Isn't it clear that the company has purchased the product since the list shows the name of the part and its brand as well.
Thanks for any help.