Buttoning a sewingmachine type buttoning a sewingmachine can be divided into singlethread chain line mark and double-thread lockstitch of two kinds.
钉纽扣缝纫机类型钉纽扣缝纫机可分为单线链式线迹和双线锁式线迹的两类。
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This machine could be used in sewing plastic woven bag, sack, paper bag mouth and binding of Bag-making Plant. It could use single-thread and 2-thread.