美国采购需求：BFS、屋顶瓦、屋顶瓦、沥青瓦、沥青瓦、沥青屋顶瓦

I'm reaching out to gather more detailed information about the pricing and availability of your products. We're particularly interested in understanding any bulk purchase discounts or special offers you might have, as well as the lead times we can expect for delivery. It's important for us to plan our budget and schedule accordingly, so any insights you can provide would be greatly appreciated. Additionally, we want to clarify any variations in product specifications and how they might affect pricing. If there are different options or packages available, please let us know. Also, if you have a catalog or data sheet that outlines your product range, that would be really helpful. Looking forward to your timely response so we can proceed with our planning!