Website with auction function

Our idea is that we are going to provide an auction platform for our customers to provide our Steel lot.
Customers can check product picture, product list with the product description and start price, bite price.
for participation, the customer should have their company legal document and bank details that should be confirmed once the customer signs up for their ID.
and for participation, the auction customer should deposit 5 to 10% of the product price.
please kindly find out attached file and check it