Introducing Permanent Marker Pen Ink, perfect for writing on various surfaces like metals, plastics, ceramics, wood, stone, and cardboard! Our product is designed to offer long-lasting, consistently bold markings that won't fade or smear. As a factory, we take pride in providing exceptional quality and reliable results with our products. Whether you're labeling tools, organizing files, or marking project materials, our Permanent Marker Pen Ink will give you the clear, precise marks you need. Trust us to deliver the reliable and durable marking solution you require!