Brand: Danaier Modle Number: 045 Style: cylinder Material: Iron Filled gas: Nitrogen Color: sliver/black or as you need Surface: spray painting for cylinder, chorme plating for piston rod Warranty: 180000cycles Supply Ability: 1000000peices Material: finishing rolling seamless steel tube for cylinder,steel for piston rod Quality: ISO/TS16949;ISO9001:2008 Free sample: avaliable OEM/ODM: welcome