Hii..
I have same profile as You so I think i can.Give you better Understanding about the field.
As you already mentioned that you did marketing as a major..you can go for mechanical companies marketing department like pumps marketing,Compressor,Turbines etc.
from where you did your mba..I think your college is responsible to give you proper placements.
You can be posted at marketing manager or assistant manager..
please join any technical manufacturing company in which you have monopoly of mechanical knowlege & Marketing strategy & knowledge..
Best of luck
thank you