赞比亚采购需求：永久记号笔、永久墨水、编码打印机、快干墨盒、钢笔墨水、永久性记号笔墨水

I'm interested in sourcing indelible ink marker pens for immunization purposes. Here are the details: I need these pens in violet and black, equipped with a bullet tip, featuring 14% silver nitrate with 3ml of ink per pen. Packaging should be in cartons, and the total quantity required is 264,000 units. Please provide your best pricing, lead times, and any other relevant info about the product. Looking forward to your prompt response!