美国采购需求：6000系列铝板，铝，铝板

I'm looking to procure several sheets of aluminum material for an upcoming project, specifically requiring material certification. The specifications are as follows: I need 15 sheets of a certain thickness in a standard size of 8' x 4', plus one additional sheet of slightly thicker material. Additionally, I require five sheets of another specified thickness and 14 sheets of a thicker variety, all maintaining the same dimensions. Please provide your best pricing and lead times for this order, along with any details regarding your production capabilities. Thank you!