亚洲国产精品99久久久久久,日韩亚洲综合一区二区三区,无码 人妻 在线 视频,双乳被一左一右吃着的,中文字幕人妻色偷偷久久

Welcome to Fujian Yongjing Technology Co., Ltd. the website!

Contact us

Add: 18#, Xin'An Road, Shaowu City, Fujian, China
International Trade Dept.
Tel: +86-599-6655932/6654968
Fax: +86-599-6654591
Home Trade Dept. 
Tel: +86-599-6654866/6654968
Fax: +86-599-6655755
High-purity Chemicals Dept.
Tel: +86-599-6655536/6654968
Fax: +86-599-6655755


Products

Fluorine-Nitrogen Gas Mixture

Quality StandardGB/T 26251-2010

Molecular FormulaF2                       Molecular Weight38

Item

Index

F2 content (volume fraction)/ 10-2               

(20)

N2  (volume fraction)/ 10-2                                        

(80)

O2  (volume fraction)/ 10-2                               

≤0.08

CF (volume fraction)/ 10-2                                    

≤0.03

HF  (volume fraction)/ 10-2                                        

≤0.50

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

【Back】

Copyright(C)2017,Fujian Yongjing Technology Co., Ltd. All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle Copyright Notice

六月丁香婷婷综合久久精品| 国产av一区二区三区三| 亚洲午夜精品A片久久WWW解说| 综合久久88色综合天天| 国产美女被爽到高潮免费A片| 国产又色又爽又黄的免费| 精品第一国产综合精品aⅴ| 乱码在线中文字幕加勒比| 清纯大学生囗交在线视频| 亚洲天堂av一区二区三区| 亚洲欧美一区二区精品性色| 人妻(高H)| 狠狠噜天天噜日日噜| 神马久久亚洲一区 二区| 波多野结衣一区二区在线| 国产熟女高潮一区二区三区| 2018国产亚洲精品视频| 亚洲av人人澡人人爽人人夜夜 | 国语熟妇乱人乱a片久久| 色老板在线精品免费视频| 精品国产aⅴ无码一区二区| 日本精品免费一区在线观看| 成人黄网站免费观看久久| 日本无翼乌邪恶彩色大全| 成人网日韩精品一区二区| 性色蜜月av一区二区三区| 久久WWW成人片免费看| 色欲色香天天天综合无码www| 久久久国产高清| 成人区人妻精品一区二蜜臀 | 国产怡春院无码一区二区| 人妻无码熟妇乱又伦精品| 亚洲熟妇无码爱V在线观| 亚洲成a人影院在线观看| 大香蕉伊网一区二区三区 | 日韩中文字幕电影在线看| 久久国产高清伦理久久一| 永久亚洲成a人片777777| 国产精品波多野结衣tv| 午夜福利麻豆国产精品| 1769国产精品一区二区|