What is the ruling on taking a sum of money in exchange for submitting price quotations for industrial and agricultural equipment, for the purpose of obtaining a financing loan from banks?

If you know that the price offers will be submitted to an interest-based (usurious) bank for the purpose of obtaining a prohibited loan, then it is not permissible, because it constitutes aiding in sin, and the one who aids becomes a participant in the liability. Means have the rulings of their ends, and what is forbidden to do, its wage is also forbidden. However, if the financing loan is a permissible transaction with an Islamic bank, then there is no objection to that.