At the beginning, main processes will be cutting and sewing of felts.

初期的业务包括滤毡的分切和缝制.

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These felts, manufactured mainly from wool, had low vertical permeability and poor service life.

这些毛毯生产主要来自羊毛, 具有低的垂直渗透率和差的使用寿命.

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