cylinder end covers and piston are CNC machined and important seals are from Parker, to guarantee the pneumatic cylinder safety We’re professional manufacturer of pneumatic components, such as Solenoid Valve, Cylinder, FRL unit, fittings and other hydraulic valve.Our products including listed:Cylinder Series:DNC,SQcylinder, SI,SC,SU standard cylinder DSN Series ISO6432 cylinder, ADVU, SDA,CQ2B ...