The use of material self-lining "stone on-stone" impact crushing technology has a number of important advantages, such as: the product gradation is constant, the metal contamination rate is very low, and the product material is excellent.Other areas include roller compacted concrete (RCC) in the damming industry, crushing all types of materials (concrete, glass, slag, etc.) in the renewable resources industry, and industrial minerals companies crushing extremely abrasive, high-value materials.