MFY-02 tightness tester is suitable for sealing test of products, used to check the integrity of the package and determine whether the package has leaked. The test can effectively compare and evaluate the sealing process and sealing performance of flexible packaging. It is suitable for packaging bags, bottles, tubes, cans, boxes, etc. in the food, pharmaceutical, medical equipment, daily chemical, automotive, electronic components, stationery and other industries. Seal test.