Plastic Packaging Testing Instruments, commonly used in food, medicine, medical equipment and other industries. Plastic packaging also directly affects the quality of products, so plastic packaging companies need a lot of testing equipment to confirm whether their plastic packaging is qualified. For example, it is necessary to check the sealing strength, tightness, etc. Among them, the tightness tester is a basic instrument necessary for plastic packaging manufacturers. Because the sealing performance of the package directly affects the shelf life and quality of the product.