Committed to research and development of high quality modeling clay since 2003; Conforms to EN-71, USP 61+62 and DnHP. imprints material1) Non-toxic and air-drying.2) Fine texture, soft, clean handling.3) It softens when kneaded by hand.4) Minimum shrink, firm with clear impressions, no distortion and no crack when dry, good for longtime preservation (Conforms to GB6675-2003, EN-71, USP 61+62 and ...