Combined upper & lower feed heavy material lockstitch sewing machine use upper & lower feed dog feeding. For sewing inflationary materials & latently movable materials with medium heavy. Redue bobbin change frequencies & promote sewing efficieny by using large rotary hook. This machine adopts link-motion-rod structure in feed mechanis.
Combined upper & lower feed heavy material lockstitch sewing machine use upper & lower feed dog feeding.
Combined upper & lower feed heavy material lockstitch sewing machine use upper & lower feed dog feeding. |