This machine is developed on the basis of foreign advanced technologies, which have been promoted to the market. Under the premise of continuous upgrading and quality improvement, all the technical performance indicators are superior to similar domestic products as having been proved by the production practices of users. They have become the first-class grinders for producing fine powders and micronized powders, being highly favored by users. This series are mainly used for milling dry materials of medium and low hardness (with moisture content not more than 8%), such as, chemicals, pharmaceuticals, dyes, paints, pigments, clays, foods, feeds, pesticides and other non-metallic minerals, exhibiting exceptionally excellent performances.