Stainless steel plates for a stadium project

Dear Suppliers,

We need large quantity of aluminum and stainless steel plates for upcoming project. Volume is not known for now, but it will be quite large since it will be used in construction of a very big project(stadium). Please let me now the different grades that you offer, as well as if you offer GS, SS, or CS. Your soonest respond is highly appreciated. best, Elchin