Drag Chain looks like the tank chain drag chain, consists of a lot of link. composed of the up and down or so four sections, each section can open, convenient installation, open the cover plate after put in the cable, tubing, the trachea, etc. The towline has been widely used in CNC machine tools, electronic equipment, stone machinery, glass machinery, doors and windows machines, injection molding machines, mechanical hands, overweight transportation equipment, automated warehouses.