This show a type of airtight seal food garde round paper tube. The paper tube consist of main cardboard tube with aluminum lining, metal bottom and penny lever lid. The penny lever lid has alunimum film in bottom, ensure keep tube packaging airtight. It's penny lever structure let people can close the middle metal cap back after taking the food each time. This structure has advantage of keeping food inside clean for long time. It needs to seal airtight paper tube metal bottom with paper can seal machine in packing food inside. MOQ: 1000pcs.