水晶砂（訓(xùn)練型）
Product advantages:
The surface texture is processed by embossing technology, with more moderate friction and beautiful texture.
Compound process production increases product stability and environmental protection.
Double glass fiber and cloth fiber are double stable and more stable.
High-density resin foam layer improves safety, shock absorption and rebound performance.
It is recommended to apply to all kinds of competition sites and training sites.
Production of raw materials and products without peculiar smell.
