... dust-resistant.4.Application:Railcars,automobile,steamboat,industrial electrical equipment,building door& window,construction machinery,construction bridge and tunnel. ... switches, architecture, commodity and A/V equipment, hardware and plastic molds, sports equipment and gifts, and moreQuality ControlConducted by ISO ... other countries and regions.InspectionIQC, IPQC,FQC,QA auto molded rubber parts