... PP 3. OEM accept 4. ISO9001 2008 certificate Colorful Automatic Valve Used on Storage Bags Features 1. material: PP, ... , POM 2. size: one size for each kind of valve 3. color: pink, green, blue, white, black, ... ISO9001-2008 5. kind: mini valve, mini Ninja valve, switch valve, slide valve, automotive valve 6. design and molding developed by ... T/T, L/C, etc colorful automatic valve used on storage bags