This product has the characteristics of convenient shape, economical price, elasticity, correct and clear contour of the printed model, which can accurately present the subtle inverted places in the oral cavity, and is easy to separate from the gypsum model that is fully hardened after pouring. 1. Compressive strength: not less than 0.35MPa; 2. The deformation recovery value is at least 95%; 3. The compressive strain value is not less than 5% and not more than 20%; 4. To replicate the plaster cast, a 0.05mm wide straight line must be reproduced.