美国采购需求：En124 D400、排水盖、井盖、重型排水、符合 EN124 的产品、铸铁盖

I'm reaching out to inquire about the pricing information for your products. We're currently evaluating options and looking to understand the cost structure associated with your offerings, including any volume discounts or pricing tiers you might have available. Additionally, if you could provide details on lead times and any minimum order requirements, that would be super helpful as we plan our sourcing strategy. We're keen to get a comprehensive understanding of what you offer and how we can potentially collaborate moving forward. Looking forward to your prompt response!