Model WFJ series fine giender or Model CWFJ series super fine girnder consists of three patrs i.e.main machine,auxiliary machine and electric control.Its features are compact in design,reasonable in structure.Its principle is using air to shose and no siever or screen.Being installed grading mechanism inside the machine,the crushing and grading can be finished at the same time.Whe nuse negative pressure to transport in the operation of crushing,the heat produced form the chamber will be removed continuously.Therefore it can also be suitable for crushing thermal sensitive raw materials.The scope of application of machine is wide.Its productive process is continuous and its size of granule can be adjusted.It can crush and grade many raw materials such as chemicals,foodstuff,medicines,cosmetic,dyestuff,resin,shell materials and so on.