Custom Printing Coffee Bean Packaging Bag With One Way Valve

SKU: B269 Categories: ,

Custom Printing Coffee Bean Packaging Bag With One Way Valve
FUNCTION OF AIR VALVE:
1.empty the carbon dioxide:One-way air valve can discharge carbon dioxide released by cooffee beans,prevent bags from popping,and discharge oxygen to prevent coffee beans from oxidizing oil to produce peculiar smell.
2.Transportation:one-way air valve improves the impact resistance of packaging bags and avoids crushing.

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