"Jinniu brand" series double stage vacuum extruder is the new brick machine designed and manufactured by our factory through severalresearchesand use of domestic and international advanced experience.The main frame is welded by using high-quality steel, and has the features of rational structure, solid anddurable properties, strong adaptability, low energy consumption, high efficiency, and easy maintenance and so on. It is the ideal equipment for production of various hollow brick, shale, coal gangue and coal ash.