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... device. The sliding rod is used to take up the thread to form a double-thread lock stitch. The upper and lower shafts are driven by a synchronous toothed belt. The presser foot, feed dog and needle are inte...
... and a vertical rotary hook to hook the thread to form a double-thread lock stitch. The upper and lower shafts are driven by a synchronous toothed belt. The presser foot, the feed dog, and the needle feed sy...
... rod to take up the thread to form a double-thread lock stitch. The upper and lower shafts are driven by a synchronous toothed belt. The presser foot, feed dog, and needle feed synchronously. This machine is...
... hook thread hooking to form a double-thread lock stitch, and the upper and lower shafts are driven by synchronous toothed belts. The presser foot, the feed dog, and the needle feed synchronously, and the le...
..., a vertical rotary hook to hook the thread to form a double-thread lock stitch, and the upper and lower shafts are driven by a synchronous toothed belt. The presser foot, the feed dog, and the needle feed s...