Activated carbon is a kind of carbon processed from coconut shell, which has small and low volume pores and is used to absorb odor. There are two types of desiccant bags:; Roll shape. The cut bag can be put directly into the bottle. If it is rolled, it needs to be installed on the cutting machine, which is directly distributed to the bottle. The adsorption capacity of organic gas is 5 times higher than that of ordinary activated carbon, and the adsorption speed is faster. Cocamite has specific surface area and rich micropore size. The specific surface area can reach 1000-1600m2/g, the micropore volume is about 90%, and the micropore diameter is 10A-40A. It has the advantages of large specific surface area, moderate pore size, uniform distribution, fast adsorption speed and less impurities.