... longer time. 3.material: PP 4.ISO9001 2008 certification Plastic Vacuum Bags' Valve Features 1. material: PP, PE, POM 2. size ... mini valve, mini Ninja valve, switch valve, slide valve, automotive valve 6. design and molding developed by Japan Function Be used on compressed vacuum bags, ... AE.run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); plastic vacuum bags' valve