亚洲夂夂婷婷色拍WW47,性做久久久久久免费观看,夜夜高潮夜夜爽夜夜爱爱,精品亚洲欧美无人区乱码

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