What is the ruling on dealing with a bank that buys equipment and raw materials, stores them for 20 days, and then sells them to the beneficiary with a 7% increase, knowing that the employment office pays 20% of the equipment's value without interest, there is no prior contract obligating the beneficiary to buy, and there is no penalty for late payment?

It is permissible for the bank to profit from the goods it sells on installment by increasing their price, because time has a share in the price. Profit in selling is permissible, as Allah Almighty said: "And Allah has permitted trade." There is no objection to the employment office contributing to the payment for the goods you purchased. And if the 7% is a profit for the bank on the equipment, there is no objection to that.