The LZ-2290C is the world's first sewing machine that comes with rotary-type active tension. Conventionally, it has been difficult to adjust the thread tension when the remaining amount of bobbin thread has reduced. This sewing machine, however, is able to correct and stabilize the thread tension by means of the active tension. In addition, the thread tension can be corrected according to the sewing speed, thereby contributing to improved seam quality.
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