Blades of AH-series proceeds primary granulating and fine granulating at the same time. The advanced double-edge design on cutter minimizes the resistance of material and improves the cutting. After primary crushing, the material requires only low speed(25-30rpm), low motor power(1-5HP) to have the result of low noise, little dust, and even granulated material. (There are 4x4.5mm and 6x7mm optional tooth roller cutter) Especially suitable to apply AH series that the work requirements are to operate the machine at night time or low-noise environment.