Shuttle and large hook to reduce problems of changing base thread and increase efficiency. Double foot press feeder posses upper & lower mechanism to avoid unbalance and transformation.
Utilizes a revolutionary shuttle device which eliminates the need for a bottom thread, providing greater efficiency and emphasizing the sewing quality.
This product whose shuttle device with a breakthrough tradition that is to use th design without bottom line so as to upgrade work efficiency and emphasize the sewing quality. double walking foot and
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