■ Adopts ink derived from unique nanotechnology. In addition to the speedy drying time (PPC paper about 3 seconds), it achieves vivid colors and crisp dark imprints. ■ The surface of the surface of the microfiber is extremely durable, and you can easily press it lightly on the surface to obtain clear imprints. ■ The pad will not dry out even when the lid is opened. Dries fast and does not bleed through, making it ideal for multi-color applications. Note: Not suitable for non-absorbent surfaces, art paper, coated paper, etc.