日本成本人片视频免费-男人猛戳女人30分钟视频大全-久久青草国产免费频观-欧美丰满大爆乳波霸奶水多-免费午夜无码18禁无码影院

Welcome to Qinhuangdao Tianzi Chemical Industry Co.,Ltd Website!
Contact us
Tel:+86-335-5978826
Address: Green Chemical Industry Garden, Lulong Economic Development Zone, Qinhuangdao City, Hebei Province, China.
Mobile:+86-15227250682,
+86-13313337629
E-mail:tzchem@163.com;
tzchem@tianzichem.com
tzsales@tianzichem.com
Home > Product News
  • Aminosulfonic acid

    The molecular formula of the sulfamic acid is NH2S03H. Commercial goods for the white powder, at room temperature, as long as the dry does not contact with water, solid sulfamic acid is not moisture,

  • Ammonium sulfamate

    Nature: white crystal. Soluble in water, molecular weight 114.12, easy to absorb moisture in the air, insoluble in methanol and ethanol.

  • Amino sulfonic acid uses

    Amino sulfonic acid is widely used in acid cleaning agents, such as boiler cleaning, metal and ceramic cleaning equipment; heat exchangers, coolers and engine water cooling system cleaning agent

  • Liquid guanidine hydrochloride

    Liquid guanidine hydrochloride (CH5N3.HCL) CAS: 50-01-1 Structural formula: Molecular formula: CH5N3.HCL Molecular weight: 95.53

  • The development of flame retardants

    Since the early 1950s, more than 60 years, especially since the early 1980s, flame retardants (FR) and flame-retardant polymer materials have played an important role in reducing the loss of life and


  • 5 Records
Copyright(C)2017,Qinhuangdao Tianzi Chemical Industry Co.,Ltd All Rights Reserved. ?Supported by ?ChemNet?ChinaChemNet?Toocle?Copyright Notice
Tel:+86-335-5978826 Fax:+86-335-5978826 E-mail:tzchem@163.com; Contact: Mr liu +86-13931486198
主站蜘蛛池模板: 日韩人妻无码系列专区| 成人中文乱幕日产无线码| 日韩欧美亚洲综合久久影院ds| 在线亚洲欧美日韩精品专区| 92国产精品午夜福利无毒不卡| 性做久久久久久久| 久久99久久99精品中文字幕| 日韩欧美亚洲综合久久影院| 国产免费无遮挡吸乳视频app| 激情中文小说区图片区| 大香伊蕉国产av| 激情偷乱人伦小说视频| 亚洲精品无码专区在线| 巨大欧美黑人xxxxbbbb| 欧美第一黄网免费网站| 天堂а√在线地址中文在线| 久久天天躁狠狠躁夜夜躁2014| 风流少妇按摩来高潮| 国产精品亚洲二区在线观看| 人妻一本久道久久综合久久鬼色 | 精品人妻系列无码人妻不卡| 色综合av亚洲超碰少妇| 另类 专区 欧美 制服| 无码国产精品一区二区免费式芒果 | av在线网站无码不卡的| 一区二区不卡av免费观看| 玩弄少妇人妻中文字幕| 最新精品露脸国产在线| 国产乱子伦在线观看| 色婷婷亚洲精品综合影院| 日本免费人成视频播放| 日韩精品无码专区免费视频 | 午夜片无码区私人影院| 波多野结衣久久一区二区| 久久这里只有热精品18| 蜜臀亚洲精品国产aⅴ综合第一| 亚洲国产欧美动漫在线人成| 日本亲与子乱人妻hd| 无码人妻一区二区三区一| 人人爽人人爽人人片av| 最新亚洲国产手机在线|