人人妻人人澡人人爽人人精品AV,免费AV在线观看A片无码,精品国产91久久久久久久a,亚洲精品午夜无码电影网

Quality Standard：GB/T 26251-2010

Properties：
Melting point：-218℃, boiling point：-187℃, relative density（moisture=1）1.14（-200℃）, soluble in water, relative density（air=1）1.70, saturated vapor pressure（kpa）：101.32（-187℃）, critical pressure（MPa）：5.57
Application：
Important material in fine chemical industry；widely used in electronic，laser technique and pharmaceutical industry
Storage：
Avoid direct sunlight and keep away from explosive and metal powder
Transport：
Be careful and be away from residential quarter
Packing：
Steel gas cylinder，and net weight is 40L，or according to requirements