美国采购需求：钢结构建筑，营地房屋，预制房屋，20英尺集装箱房屋，预制集装箱房屋，预制钢结构

I am reaching out to gather detailed information about your offerings for residential houses. Specifically, I am interested in the types of materials you use, the design options available, and any customization features you provide. It would also be great to know about the construction timelines and any eco-friendly practices you implement in your projects. Additionally, please share information on pricing structures, warranty policies, and any bulk purchase discounts. Understanding your capacity to handle large-scale projects would also be beneficial. Looking forward to your prompt response with the requested details so we can explore potential collaboration opportunities!