Introduction 
    The double-screws turning machine is used for fermenting and dump of organic wastes such as livestock manure, sludge garbage, sugar factory filter mud, dregs cake and straw sawdust. It is widely used in the fermentation and removal of water in organic fertilizer plant, compound fertilizer plant, sludge waste plant, gardening farm and BIS mushroom plant. It is suitable for aerobic fermentation, and can be used in conjunction with solar energy fermentation room, fermentation tank and moving machine. It can be used together with the moving machine to realize the function of many of slots for one machine. The fermentation tank can be continuously discharged or batch discharged. High efficiency, smooth operation, strong and durable, and even throwing.   The dump machine is the core equipment of aerobic dynamic composting. As a new type of machinery, it is still not known in the national product catalogue, but it is fast propagate in the family of fertilizer machinery and equipment, which is the main product of the development trend of the compost industry to replace the handset and the handset for the dump of the material.