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coffee bag one-way valves/one-way valves/one-way degassing valves
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- coffe bag one-way valves are made of food-rate new PE and silica gel material.
- coffee bag One-way valve can protect coffee from oxidation and effectively release CO2 gas,and prevent bag form bursting.
- It can keep the coffee beans fresh and dilicious.
magic hooks/balancing valve for air/coffee bag one way valve
