非洲地区采购需求：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 currently in the market for whiteboard marker ink and I'm interested in sourcing it in convenient 500 ml packaging. I'm looking for a product that boasts high quality, quick-drying properties, and good visibility on various surfaces. It's crucial that the ink provides vibrant colors that won't easily smudge or fade, ensuring long-lasting usage. Additionally, I'd like to know about the available options you have in this size, including any bulk purchase discounts or special formulations that might be tailored for different whiteboard markers. If you could provide details on your pricing structure, lead times, and any available certifications or quality assurances, that would be greatly appreciated. Looking forward to your response!