赞比亚采购需求：螺栓、螺母、螺钉、垫圈、锚栓、螺纹杆

I'm looking to source some fasteners for an upcoming project. Specifically, I need a certain type of bolts and nuts, so please provide details on availability, pricing, and lead times for both sets. Additionally, it would be great if you could include information on any minimum order quantities, material specifications, and any other relevant options. I'm interested in ensuring the quality meets industry standards, so any certifications or testing info would be helpful as well.