External trough line and the tube are through a second compression molding, and the curing process is also made the appropriate adjustments.
外部槽线与管体经由二次模压成型，固化工艺也做了相应调整。
External trough line and the tube are through a second compression molding, and the curing process is also made the appropriate adjustments.
外部槽线与管体经由二次模压成型，固化工艺也做了相应调整。
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