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Visitor No.1
网友 in 2021-08-18 17:36 commented:
For products such as shells and boxes, it is assumed that the front mold is opened when the mold is opened. If there is a vacuum, the front mold needs to be vented to eliminate the influence of vacuum. Some products also need to be vented on the back mold; if the product structure requires mold temperature, the mold temperature must be added at the end of the mold trial to increase.
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