非洲地区采购需求：选举产品，不可擦去的记号笔

I'm looking to source indelible ink marker pens specifically designed for immunization use. The desired specifications include the following: the pens should be available in violet and black colors, with a bullet tip feature. Each pen needs to contain 3ml of indelible ink with a formulation that includes 14% silver nitrate. Additionally, I prefer the packaging to be in cartons for efficient storage and transportation. Could you please provide a comprehensive price list for these markers? It would be great if you could include any available discounts for bulk orders or information on lead times for delivery. I'm eager to compare options and move forward quickly if everything aligns. Looking forward to your detailed response!