Custom plastic injection molding service china
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During the process of molding, the surplus material is spilled into the gap between the mold and the mold surface and retained on the plastic part. A kind of linear trace on the surface of plastic parts, is by the injection or extrusion of a number of streams of material in the desert diverging and confluence, melting at the interface is not fused, each other cannot be fused as one, resulting in fusion imprinting, affecting the appearance of plastic parts and mechanical properties.
custom plastic injection molding service china
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