Main Use The machines are suitable for flow process, and they are perfect equipments used for granulas to screen. Working principle Using relative movement of activities Gear and fixed-gear to smash, rub on crushed material by impact. And 20-, 30-, 40model , all is designed by "GMP" standard the whole machine is made by stainless steel , 30-and 40 crushing room with water cooling jacket, the machine has reached the international advanced level