What is the long-term sustainable development to grinding milling?

A famous grinding equipment provider said that the process of human civilization, refinement process. It is The same as grinding mill industry ,from the development grinding mill ,we can see that people used the initial equipment to process stones, and later evolved into a professional sand making equipment, sand making equipment in fineness is higher than the crusher, but then people gradually found even sand making of fine powder can not meet the needs of the ultra-fine powders, so the equipment for processing fine powder such as Raymond mill, the European version coarse hammer crusher to be shipped born .Powder processing equipment is the trend of the times and produced on the basis of the industrial demand, especially modern micro powder grinding equipment, whether it is on or in the processing of the finished product fineness have been greatly improved in processing fines accuracy and yield than past Raymond mill, coarse grinding mill.