There are many kinds of mineral trace elements in the stone mill. When the stone mill rubs with the grain naturally, the mineral nutrient elements enter into the raw grain, which is naturally mixed and integrated, and the nutrition is more abundant. Stone mill is a kind of machine used to process grains such as rice, sesame, wheat and beans into flour and pulp. It began to use human or animal power. In the Jin Dynasty, China invented water mill powered by water. It is usually made of two pebbles.

磨是平面的两层，两层的接合处都有纹理，粮食从上方的孔进入两层中间，沿着纹理向外运移，在滚动过两层面时被磨碎，形成粉末。主要适用于家庭、饭店、、餐饮业的生产加工，低速研磨、原汁原味。可加工豆浆、米浆、芝麻酱、香油、花生酱等。

The grain enters into the middle of the two layers from the hole above, moves outward along the grain, and is ground to form powder when rolling through the two layers. It is mainly suitable for the production and processing of family, hotel, supermarket and catering industry, with low speed grinding and original taste. It can process soybean milk, rice milk, sesame paste, sesame oil, peanut butter, etc.

石磨豆浆的营养是丰富多样的，豆浆含有铁、钙、磷、镁等人体必须的多种微量元素，还含有植物油和丰富的蛋白，素有“植物肉”之美称。传统的加工工艺-石磨运转均匀速度慢，磨出的豆浆既均匀又细能让豆类产品充分释放蛋白质，含有的独特矿物质与大豆营养元素天然混合、浑然一体。

The nutrition of Shimo soybean milk is rich and diverse. Soybean milk contains iron, calcium, phosphorus, magnesium and other trace elements necessary for human body. It also contains vegetable oil and rich high-quality protein, so it is known as "plant meat". The traditional processing technology, stone mill, runs evenly and slowly. The milled soybean milk is both uniform and fine, which can fully release protein from soybean products. The unique minerals and soybean nutrients are naturally mixed and integrated.

指出，夏季人体营养流失较快，且不容易吸收，盲目进补的话容易引起上火。因此，夏天进补要以均衡营养、降温怯火为前提，不宜进食燥性补品。而豆浆中富含蛋白质、维生素、矿物质等养分，经常饮用能均衡人体营养，调整内分泌，对降低胆固醇、减轻动脉硬化、高血压及保肝等有一定的帮助；同时，豆浆还有消暑之功效。

Experts pointed out that the loss of human nutrition in summer is fast, and it is not easy to absorb, blind supplement is easy to cause fire. Therefore, summer tonic to balance nutrition, cooling and fire as the premise, should not eat dry tonic. Soybean milk is rich in protein, vitamins, minerals and other nutrients. Regular drinking can balance human nutrition, adjust endocrine, reduce cholesterol, reduce arteriosclerosis, hypertension and protect liver; At the same time, soybean milk has the effect of relieving summer heat.