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The best way to select twin-screw is to look at the actual product and production demand, and then determine your own demand points, such as opening and closing mode, temperature zone, heating mode, heating power, whether it is connected with cooling medium, screw diameter, length diameter ratio, kneading block shape, arrangement and combination mode, confirm the wear resistance of materials, whether special coating treatment is required, and confirm the state of materials in the screw, Select the appropriate power host, and confirm the design of feeding port and discharge port according to the production process.