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  • Plastic Folding Hand Fan Injection Molding Process Sep 18,2020
    The handles of our plastic folding hand fan is maken by injection molding process. The plastic injection molding process mainly includes four stages: filling, pressure holding, cooling, and demolding. Filling is the first step in the entire injection molding process. The time starts from when the mold is closed and finish when the mold is about 95% filled. The function of the pressure holding stag...

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