精品四虎免费观看国产高清午夜 ,欧美精品亚洲精品日韩经典,国产最新视频

Molecular formula	NH3
CAS No.	7664-41-7
Use	Liquid ammonia is mainly used to produce nitric acid, urea and other chemical fertilizers, and can also be used as a raw material for medicines and pesticides. In the national defense industry, it is used to manufacture rockets and missile propellants. It can be used as the ammoniated raw material of organic chemical products and is known as "refrigerant". At the same time, liquid ammonia has a certain sterilization effect. In the poultry breeding industry, it is used for sterilization and cooling. Liquid ammonia can also be used for mercerizing textiles.

国产精品福利一区二区久久,久久综合成人网,久久精品国产一区二区电影,91福利影院,国产成人精品综合,青青青国产视频,午夜久久久久久亚洲国产精品