... printing machine,Auto-control machine 2.Model Number: ZH Pneumatic Pressure Switch ZH Pneumatic Pressure Switch Cylinder1. Standard cylinder2. Structure ... with CNC milling and turning machines, CNC Lathes, etc.3. Quality Certificates: ISO9001-2000, ISO9001-2008 Quality Assurance ... parts, engineering goods, etc. 5. Quality control following 3 phases of thorough inspection, first-off inspection, during- ...