美国采购需求：卷帘门顶挡、卷帘门踏板、卷帘门部件、卷帘门配件、商用卷帘门五金件

I'm in the market for Head Stop & Step Plate components specifically designed for commercial roll-up doors. To proceed with my procurement, I would appreciate detailed information regarding your available options. It would be helpful if you could provide specifications, materials used, and any performance features that set your products apart. Additionally, I'm interested in pricing, minimum order quantities, and lead times for delivery. If you have any catalogs or product sheets showcasing your range of Head Stop & Step Plates, please include those as well. This will help me make an informed decision and establish a potential order. Looking forward to your prompt response!