Rice rolls leather is made of a smooth surface. The so-called flour (flour), also known as wheat flour, is a kind of powder that is processed with flour to wash away gluten, and then the water powder from which gluten is washed is precipitated, filtered and dried, and then dried and ground into fine powder. Features: white color, smooth surface, translucent, crisp and cool, smooth entrance of steamed products and crisp fried products. They are usually sold in supermarkets, food stores and flour shops.