Direct drive high-speed overlock sewing machine with variable top feed
BT EXT5200-3DA/4DA/5DA/UT
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BT EXT series adopted a new type of feeding mechanism which is feed by up and down operated independently. inlarge the up and down feeding power and accordingly eliminate sewing dislocation, or sewing together with other fabrics, make the difficult Process turns and twists, piping etc become simple.