The series of pf is mainly used in industries of mining, architecture, chemical, electric power, metallurgy and ore, slay & coal with compressive strength of smash materials not over 320mpa. After the crushing, the products are with rhombus shape & low elongated and flaky particles content. It’s used as the terminal smashing with the jaw crusher. But it’s not suitable for the crushing of ore or viscous-material with surface moisture above 8-20%.