美国采购需求：五金、铰链、房屋设计、家居设计、现代房屋设计、门锁

I'm seeking detailed information about your door handles. Specifically, I'd like to know about the various materials you use, your design options, and whether there are customizable features available. Additionally, any information on the durability and maintenance of these handles would be helpful. Also, could you provide insights on your pricing structure and lead times for orders? Understanding your production capabilities and any minimum order quantities would assist us in planning our procurement better. Looking forward to your prompt response!