... abrasive material, glass, construction material, machine-made sand, metallurgy, etc. with best feeding size from 30mm to 50mm. It is also ... high efficient crusher. It has the following features:1. Rotor with deep chamber increases 30% capacity after perfect design.2. Side ... operating ratio can be increased 48%.3. Worn hammer with combined type is only changed to reduce operating cost 30%. Another pair ...