... equipment and costs 3.CE,API,ISO certificates ESDV Shut down valve : With GS,CE certificate Non-toxic,environmental-friendly ... made under ISO9001,CE ,API strictly Note: ESDV Shut down valve as for the difference working condition, difference working conditiondifference ... of your operations by closingautomatically in case of emergency,PST .ESDV Shut down valve's feature•Compact design with unique mini ...