MESDA mobile impact crusher is a perfect combination design of heavy rotor, high wear-resistant materia and chamber. This combination was proved a revolution, it not only improves the production capacity and product quality, and also reduces the production cost and the consumption of ware parts. Impact crusher use unique hammer device, which could make the hammer more reliable. With the coorperation of many R&D Centers, MESDA has improved the durability of wearing parts (Hammer, impact plate liner, frame backplate) and reliability machanical parts. It achieves a technological innovation.