Injection molded items are the end products of injection enterprises and their cost consists of the cost of raw materials, molds, processing and assembly.
注塑企业的终端产品是注塑制品，注塑制品的成本由构成的原料成本、模具成本，加工成本和装配成本组成。
Residual stress is one of important indexes of evaluating the quality of injection molded parts, especially for optical products.
残余应力是评价塑料制品品质的一个重要指标，尤其是对高附加值的光学制品。
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