★ Change tail block support for stretch support,reduce noise farthest,improve grade performance;
　　★ Low conk out,little maintain,handle facility;gear-box adopt non-gear wheel running manner,do without lubricate,avoided oil leak;
　　★ Inside clipper-built design,without material aggradation,avoid pollute;
　　★ Grading sieve setup convenience exchange sieve fleety;
　　★ Have two layer sieve,three layer sieve and two layer sieve double material can select;
　　★ Apply to grain material、power material clean up and grade dispose.