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Precise injection mold refers to resin materials into metal models get a certain shape of product installations. In fact in order to control mold temperature, on the mold or cool the refrigerant through the hole, heaters and other devices. Has become the molten material into the sprue, runner, runner injection mold cavity. After a cooling period of mold is opened, ejecting device on the machine ejector ejector rod, will launch products. Take shape is created by forming molten resin flows into the sprue, runner guide molten resin into the mold cavity and posed by products. We're equal runner lengths are typically designed.