巴基斯坦采购需求：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 am interested in purchasing HP ink cartridges, specifically the black model. We are looking to order a significant quantity of 500 pieces. It's essential for us to secure a good price for this bulk order, as it will directly impact our cost management and sales strategy. Please provide your best pricing options, alongside any applicable terms and conditions, including shipping details and lead times. Additionally, if you have any special offers or discounts for larger orders, I would appreciate information on those as well. Your prompt response will help us move forward quickly in our procurement process.