坦桑尼亚采购需求：螺栓、螺母、螺钉、垫圈、锚栓、螺纹杆

I'm looking for flatt washers with a zinc finish and drop anchors in a gold coating. Please provide details on your available options, including specifications, sizes, and any minimum order quantities. Additionally, I'd like to know the pricing structure, lead times for production, and shipping details. If you have any catalog or product sheet that you can share, that would be great too. Looking forward to your prompt response!