1. With the button swith in the neighborhood of the stitch in the operational device, it can be transited to the pre-fixed two types of contract stitch specification.

2. Double teeth rack, independence revolving function and contract slot procedure can be adjusted at will according to product demand.

3.The forepart teeth rack and the upper teeth are driven synchronously. so, contract stitch is stable and will never deform.

4 .The product deploys fireproff sweept, electronic motor, automatic raising authenticating code tool and localizer.

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