Specialised to develop the high strength & special alloy screw, ensure the useful life of machines will be longer. Equiping the double hallway pre-injection motor of the leading technology, can make sure the screw feeds more and faster by the enlarge torque, so that mre improving the plasticing capacity. Adopting the most suitable plan,such as enlagre oil passages and the hole of feeding machines, make sure the stability and speed when its running with the sheet stock, crushing or nozzle materials.