美国采购需求：铝合金窗，铝门，门窗，圆窗，推拉门

I hope this message finds you well. I'm reaching out to check on the current availability of the product we're interested in. It's important for us to understand if you have stock on hand or if there might be any lead times we should be aware of. This information will help us in planning our procurement and in maintaining our supply chain efficiency. Additionally, if you could provide any details on the specifications or variations available for this product, that would be incredibly helpful. We're keen to move forward promptly, so any information you can share at your earliest convenience would be greatly appreciated. Thank you!