This machineis integrated feeding thick lock-stitch sewing machine (single needle)of the latest edition ,using large vertical hook(thick thread special hook ),cancel ,slider bar selects the line up with needle bearing shafe ,synchronized gear form bring transmission,piston typpe pump lubrication system.Using needle bar swinging and presser foot,send cloth with teeth step way.Feeding the machine in the comprehensive performance transmission lightly,the noise is mall,the high abrasing resistance,and Hook with protection of on-off device,ensure overload the sewing products quality and the safety of the hook.