In addition to the flammability of the organic solvent that dissolves the ribbon, the color of the ribbon is also adjusted with flammable paint. Experiments show that no matter what kind of ribbon is sprayed on the alcohol lamp, it will catch fire, even if it is replaced by an electric furnace with a lower temperature. It is understood that in foreign countries, fine chemical products such as ribbons are generally called aerosols and classified as dangerous goods, and their production and sales are strictly managed. Wu Xinmin said that the raw materials used to make ribbons are classified as inflammable and explosive dangerous goods in chemistry, but when they are made into commodities, they are not dangerous goods.