It is a headache matter for Some sepcialty coffee manufacture to keep coffee powder fresh after being roastered. Since limited specialty coffee supply , to have a good packaging is becoming extremely urgent.  Based on this reason, K cup nitrogen flushing sealer is created. K cup pods produced by this machine are plump, and it can keep coffee original flavor longer and avoid being oxidized in air. The K-cup  produced by this machine has 98.5% plus nitrogen in the container. sometimes, it can reach 99.5% plus