double layers one way valve vacuum bag

{"cid":"91199749","title":"Sandwich Clear Vacuum Seal Bags , 33.9mpa 100UM Xl Vacuum Seal Bags With Air Valve","imgUrl":"https:\/\/img.chinax.com\/nimg\/c9\/8a\/b90b1bb4e8c7fc25c8abc249e319-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"ASP","Model Number":"Crown-V009","Minimum Order Quantity":"30000pcs","Delivery Time":"15-25days","Place of Origin":"dongguan china","Payment Terms":"L\/C, T\/T, Western Union, ","Supply Ability":"1000000pcs per month","Packaging Details":"100pcs\/bag,100bags\/carton","Feature":"Eco-Friendly","Material":"PA+PE","Type":"Storage Bags","Shape":"Square","Classification":"Vaccum Compressed Bag","Thickness":"50-200microns (As Demands)","Plastic type":"PA+PE OR PET+PE","Product name":"Thick Embossed Vacuum Seal Food Storage Bags Pump"}}