商品描述： 用途：适用于服装行业轻薄、中厚料的钉扣。特点：单线链缝线迹，单踏板起动。缝钉牢固可靠，针数转换简单易行Application: Suitable for the button attaching of the light and medium materials.Characteristics: Single chain stitch, single pedal working. The attaching is solid,it is easy to switch the needle number.
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