The oxygen scavenger belongs to the 0104 group of Class 1 of the trademark classification. Deoxidizer, also known as oxygen scavenger and oxygen absorber, is an additive that can absorb oxygen and slow down the oxidation of food. It is a new product being used in food preservation. It is a group of chemical mixtures that easily react with free oxygen or dissolved oxygen. It is packed in a sealed paper bag with a certain degree of air permeability and strength, just like a desiccant bag. It is sealed and packaged with food in a food bag and can be removed. The oxygen remaining in the air in the bag prevents food from discoloration, deterioration and oil rancidity due to oxidation, and also inhibits the growth of mold, aerobic bacteria and grain pests. Deoxidizers are not only used to maintain food quality, but are also used for the preservation and rust prevention of grains, feed, medicines, clothing, fur, precision instruments and other items.