Plastic injection molding is a manufacturing process for producing parts by injecting material into a mould. The material is usually thermoplastic or thermosetting polymers.First, feed Material into a heated barrel, mix. then the material is forced into a mould cavity. Finally, it cools and hardens to become the configuration of the cavity. Plastic injection moulding is widely used in a lot of industies, which can make a large amount of products, from the smallest components to entire body panels of cars.