Our company located in Zhoushan China with very rich and vast experience of more than 20 years in the field of screw&barrel for plastic extrusion/injection and blow mounding machines. We can offer single screw, twin coned screw, twin parallel screw, bimetallic screw, etc. We also can manufacture screws and barrels according to your drawings.More detail information and pictures of samples, you are welcome to log our website to get. Any need feel free to contact us.