premix moulding

例句：

1. 1.The premix moulding process is crucial for the production of high-quality plastic products.
   预混合成型过程对于生产高质量塑料产品至关重要。
2. 2. The company specializes in producing premix moulding parts for various machinery.
   该公司专门生产各种机械的预混合成型部件。
3. 3. During the premix moulding stage, the material is mixed and shaped into a desired shape before being molded.
   在预混合成型阶段，材料被混合并塑形成所需的形状，然后进行模压。