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    One of the main equipment for refining raw materials in the brick and tile industry, drawing on advanced technology from similar foreign products and combining with the characteristics of domestic and foreign raw materials, it is professionally suitable for refining low plastic clay (mountain soil) containing particles. The gravity extrusion of the roller effectively solves the problem of uneven particle distribution during the processing, significantly improving the comprehensive process performance of the raw materials. It is the main equipment for processing raw materials for rectangular bricks and block bricks.