... ,overcoat,etc.Applicable to a wide rage of materia The machine adopts circularly oil-offerings, little oil-consuming, further improved ... thread take up, self-lubricating can produce two lines of lockstitch, serve for the purpose of sewing shirts, uniforms, jeans, overcoats ... to a wide range of sewing materials, synchronized feed by needle and feed dog can prevent slippage and puckering between layers ...