美国采购需求：铝合金门、铝合金窗、推拉门、平开窗、入户门、车库门

I hope this message finds you well. I'm reaching out from Roadrunner Builders in the US to gather some details regarding your shipping options and pricing structures. We're currently evaluating potential suppliers and would appreciate insight into your product availability and delivery timelines. Additionally, it would be helpful to know if you offer any bulk purchase discounts or special terms for regular shipments. Understanding your lead times and shipping costs will greatly assist us in our decision-making process. Looking forward to your prompt response so we can move ahead efficiently.