It would be a real job to put together who made each tractor sold. The engine comes from this company, the transmission from another, the sheet metal, the hyd., the FEL, etc. And who put it together. And just because one factory is making the one model today, does not mean they will make it next year. So the sales on one model may go to more than one company that made it.
Most are good companies, but I have worked for a good company that was making a lot of profit. I was still purchased and closed. The people buying it did not want the competition.