Auto vanish pen is designed for marking garments and shoes material and embroidery material and leather material, etc. There are Pink, Blue, Violet color for customers' preference. The mark ink could vanish automatically by air after 1 or 2 days without any trace. Moreover, vanishing time could be adjusted and controlled as per customers' requirements. It's much more convenient and economic than chalks, and it's widely used in garment and shoes industries instead of marking chalks. We also produce metal silver refill pen and plastic silver refill pen, cleaning pen. For silver refill pen we have many colors for choice. Outer packing: 12pcs/box, 1,440pcs/ctn