巴拉圭采购需求：镀锌钢卷、彩涂钢卷、彩涂钢卷、H型钢、钢筋、角钢

I'm interested in exploring products that fall under the category of "negro." Specifically, I'm looking for a range of options that could include textiles, paints, or any other materials that feature a deep black color. Please provide information on the available varieties, as well as any specifications or unique qualities that your products may offer. I'm keen to understand what makes your options stand out in the market. Additionally, it would be helpful to have details regarding pricing, minimum order quantities, and lead times for these products. If you have any catalogs or samples available, please share that as well. I'm looking to make a decision soon, so a prompt response would be greatly appreciated!