美国采购需求：保温折叠门、节能折叠门、隔热门、冬季折叠门、保温露台门、轻型保温门

I'm reaching out to inquire about the pricing for a black cover that fits a specific size. I'm interested in understanding the various options available, including any features or materials that come into play. If you have different styles or variations, please let me know. Additionally, I would appreciate details on minimum order quantities, lead times for delivery, and any available discounts for bulk purchases. If it's possible, I'd love to receive a catalog or a few samples to assess the quality before making a decision. Thanks for your help!