美国采购需求：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

We're looking for a silver nitrate marker pen with a 25% concentration. This indelible ink should be suitable for staining nails, cuticles, and finger joints. Each pen should contain 3mL of the ink and have a shelf life of one year when stored in a dark place at room temperature. Additionally, the ink should remain for at least 3 days once applied. Please ensure that the product is available in the form of a convenient pen or marker. Looking forward to your response with details on pricing and availability!