1.CE,ISO9001-2008 2.Good performance 3.adjustable Product characteristic:1.Without lubricating:Needn't lubricating on piston rod for using oiled axletree.2.Cushion:Besides mounted cushion,there is adjustable buffer at the terminal of the cylinder to act smoothly.3.Kinds of mounting:Have kinds of installing accessories to choose.4.With magnet:With permanent magnet on piston,it can touch the magnet ...