1. The solid wood part is 100% pure solid wood, no veneer, no artificial board.2. The main material is imported from North America FAS grade cherry wood, elegant wood grain, delicate feel, not easy to crack, color and lustre warm and dark over time.3. The main material is black walnut imported from North America, with rich and varied patterns, fewer scars, no mold, belonging to the luxury of wood, used for drawing surface.4. Auxiliary materials for the New Zealand imported pine, good toughness, stable nature, light texture, straight texture, less scars, used in the vertical frame, slide mat, vertical post in the water, after the cross, after the bottom cross.5. The auxiliary material is paulownia wood, corrosion-resistant, abrasion-resistant, heat-resistant, not deformed, not easy to get moldy, it is the material used to make the wind box drawbar since ancient times, and it is also the famous Chinese ancient zither wood, used for the backboard, draw box.