These factors affect the selection of cast materials selection process cast materials needs to be considered carefully as it related to the durability of the molds, surface quality, as well as related technologies to create the mold such as cutting processing capability, gloss levels can be achieved, ... Therefore the selection of cast materials is a very important job, and when selected will depend on the following factors: type of plastic injection molding will because there are harmful to plastics molding steel. the surface of the ball, complexity, functionality of products squeezed out. the number of products required.
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