1. Simple structure, smooth operation, stable performance and leading output among similar products;
2. After adopting CO2 protection welding treatment, a machine frame is tight and durable;
3. All easily worn parts adopt high manganese steel, to prolong the service life of mainframe;
4. A spring locking device can provide stable crushing force and excessive iron release protection;
5. A labyrinth type dust proof ring is used for sealing to ensure clean lubricating oil;