肯尼亚采购需求：补充白板笔墨水，白板笔墨水，精选产品，永久记号笔

I'm looking for indelible ink marker pens specifically designed for immunization programs. The ideal product would come in violet and black colors, equipped with a bullet tip for precise application. It's crucial that the ink is indelible, ensuring that marks remain clear and visible over time. Additionally, I require these pens to contain 3ml of 14% silver nitrate ink. Packaging should be in cartons for efficient shipping and storage. If you have options available that meet these specifications, please provide pricing and lead time for delivery. Thank you!