久久久精品国产SM最大网站,精品国产一区二区三区,欧美日韩国产综合一区二区三区,国产精品无

Packaging plays a very important role in the safe transportation of bromine

Bromine has a strong volatility, so when stored in a container, it is easy to volatilize, and the vapor is corrosive, has a unique suffocation odor and tearing effect, so when bromine is used, it must be done Good preventive effect to prevent volatilization. ??After bromine volatilizes, it will cause great harm to human hands, eyes, nose and mouth, etc. Therefore, individuals who handle brom