1. ISO9001 2008 certification 2. material: PA+PE 3. thickness: 60micron 4. triple your storage space 5. size: 110*100cm Plastic Home Storage Vacuum Packaging BagsFeatures:1. The design and moulding technology for the new valve were developed in Japan (Taiyo Chemicals Co.,Ltd.).2. Easy to make the bag vacuum--rolling by hand,squeezing by hand and suction using a vacuum cleaner.3. The quality of ...