1、Different processing methods. injection molding is a method of getting molded products by mixing completely molten plastic material by a screw and curing it after cooling. Injection molding is a plastic processing method in which plastic is plasticized in the heated barrel of an injection molding machine and then injected by a plunger or reciprocating screw into the mold cavity of a closed mold to form products.

The advantages of injection molding method are fast production speed, high efficiency, automatic operation, variety of colors, simple to complex shapes, large to small sizes, and accurate product sizes, easy to update products, and the ability to form complex shaped parts. Injection molding can process products with complex shape, precise size or with inserts, and high production efficiency.

2、Different application fields.injection molding is suitable for mass production and complex shaped products and other molding processing fields. Injection molding is used for most thermoplastics and some thermoset plastics (such as phenolic plastics).