八边封塑料袋
八边封塑料袋

详细说明:

塑料包装是指用塑料包装。塑料是以组成或天然的高分子树脂为首要资料。增加各种助剂后,在必定的温度和压力下具有延展性,冷却后可以固定其形状的一类资料。

Plastic packaging refers to the use of plastic packaging. Plastic is composed of natural polymers or natural resins. After adding various auxiliaries, it has a ductility at a certain temperature and pressure and can be fixed after cooling.

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