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Simple classification of the mold
    According to the molding material is different, the mould can be divided into metal mold and non-metallic mold. Metal mould is divided into: casting mold, non-ferrous metal casting, steel casting and forging mould, etc.; Non-metallic mold is divided into: the plastic mold and inorganic non-metallic mold. And according to the mold itself, different material, mold can be divided into: sand mold, metal mold, vacuum mold, wax mold and so on. Among them, with the rapid development of macromolecule plastics, plastic mold is closely related to people's life. Plastic mold can generally be divided into: injection molding, extrusion molding, gas-assisted molding and so on. Mass production of sheet metal, the cold heading steel, forging, metal mould, etc
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