塑封的事情 看来LZ没干过
塑料包装封口都用塑封机 就是通过高温将两片塑料焊上的.
他这个意思就是塑料封口的4周的宽度都是 1公分
英语翻译the welding of the bag should be 1 cm height on all 4 si
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