Use stone powder made environmentally friendly materials to protect rainforests, recyclable, and degradation of natural light. Certified by the Cradle To Cradle, ISO9001, ISO1400 and other certifications and patents. Stone paper with waterproof, non-toxic, resistant to insects, not to become yellow, high durability, good printing effect, softness, easy to writing and paste. Good ink absorption of large scale output, you also can use water-based ink.