赞比亚采购需求：电力电缆制造商，电线供应商，交联聚乙烯电缆，聚氯乙烯电缆，铠装电缆，中国电缆厂

I'm looking to purchase 20 rolls of high-quality solid copper single core wire with a diameter of 2.5 mm. Could you provide me with your pricing details, including any bulk purchase discounts and shipping options? Additionally, I'd like to know about your production lead time and whether you have available stock. If you could send over a catalog or data sheet for reference, that would be great too. Looking forward to your prompt response!