The screening of food bags plays a decisive role in the quality of packaged food. If the food bags are not good, no matter how high-quality the packaged food is, it is of no use. . So what kind of food bag can make people feel at ease? In fact, as long as we pay more attention to the details during the screening process, we can screen out high-quality and safe food bags. A safe and secure food bag must have no smell, that is, a food bag made of brand-new materials, which is colorless and odorless. However, some high-quality food bags also have a slight smell, but these smells are just the smell of ink during printing, not the smell of some harmful substances. Therefore, for our own health, we must choose high-quality food bags, and do not choose poor-quality food bags for use.