Industrial sewing machine 1.multifunctional 2.sewing kinds of thin ,medium ,heavy fabric 3.high speed straight stitch sewing Industrial sewing machineSM-927This machine is suitable for light ... sleeve and trousers tubular section.SM-928The machine is most suitable for sewing tubes of medium and heavy materials, such as ... , horse gears, and gunnysacks, cars seaming ans so on. Industrial sewing machine