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1. Barrel temperature: Big size injection mold from China tells you that when the barrel temperature (plastic temperature) is high, the pressure transmission is better and the shrinkage force is reduced. Big size injection mold from China tells you that when using a small gate, the shrinkage rate is still relatively large due to early solidification of the gate. For thick-walled plastic parts, even if the barrel temperature is high, its shrinkage is still large.