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

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

Industrial Ammonium Fluoride

Quality StandardGB28653-2012

Molecular FormulaNH4F                 Molecular Weight37.04

Item

Index

First grade

Qualified product

Ammonium Fluoride (NH4F) w/%  ≥

95.0

93.0

Free Acid(as HF) w/%  ≤

1.0

1.0

Ammonium fluosilicate[as(NH42SIF6]w/% ≤

0.5

1.0

 

Properties
The product is a white powdery crystal. It can deliquesce easily and dissolve easily in water. It can dissolve in alcohol slightly. It can be resolved when it is affected by the heat or it is in hot water. It can corrode glass. It’s poisonous.
Application
The product can be used for glass frosting or extracting rare elements and used as a preservative or a mordant.
Storage
Moisture-proof and sealed preservation is needed.
Transport
It should be treated as inorganic poisonous goods.
Packing
The product is packed in a 25kg polythene plastic bag. Also pack it on consumer requests.

【Back】

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

亚洲综合一区二区三区无码| 久久久久久久久久久精品| 亚洲欧美婷婷五月色综合| 中文字幕精品三区无码亚洲 | 丰满少妇高潮惨叫久久久一| 亚洲日韩av无码精品放毛片| 中文字幕人妻丝袜美腿乱| 精品亚洲一区二区三区在线观看| 亚洲综合小说另类图片久久| 国产精品久久香蕉免费播放| 天堂а√在线中文在线| 撸啊撸视频在线观看| 色欲人妻aaaaaaa无码| 亚洲成a人片在线观看| 欧美激情无码视频一二三| 伊人久久大香线蕉亚洲| 无码人妻精品一区二区三区东京热| 免费 成 人 黄 色 在线观看| 手机在线看永久av片免费| 真人做爰高潮全过程毛片| 国产欧美久久久精品影院| 欧美成人看片黄A免费看| 在线看片v免费观看视频| 中文字幕av日韩精品一区二区| 麻豆传煤入口免费进入2023| 领导征服下属新婚人妻| 久久变态刺激另类SM孕妇| 久久久婷婷五月亚洲97号色| 久久久久久亚洲精品中文字幕| 亚洲人成电影在线观看| 小粉嫩精品a片在线视看| 女人18毛片a级毛片免费视频| 蜜臀av人妻久久无码精品麻豆 | 日本亲与子乱人妻hd| 国产猛男gaygayxxgv| 久久久久久久97| 日韩电影免费在线观看网站| 国语自产一区怡和院| 亚洲色欲色欲www在线丝| 日本高清色www在线观看视频| 久久久久久久久波多野高潮|