日韩 一区 在线,色香欲天天影视综合网,性欧美丰满熟妇XXXX性久久久,午夜视频国产在线观看

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