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Comments: Give material thick material flat for person who sew to use from head to foot giving cloth toothing, giving material, to expand body seam material and invistible and intangible change thick material in being relatively loud from head to foot, can make the amount of material sent of layer from head to foot reach unanimity in the course of sewing; Adopt and fasten the shuttleless loom greatly, reducing changes the number of times of the bottom line, improve working efficiency; Adopt and lubricate the device full-automatically, improve the service life of machine.