我们需要支付的其他功能包括预卷和后卷。

Other features we'd pay for include preroll and postroll.

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可选装预扩幅、归中等部件，适用于卷边的织物。

Pre-spreading part and centering device are optional parts, suit for edge curling fabrics.

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一种用于充气式包装垫的预成型的塑料膜，其包括具有前端和尾端的成卷的材料。

A plastic foil for inflatable type package pad comprises a volumed material with a front end and a tail end.

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