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: 亚洲精品久久久无码一区二区| 国产成人综合欧美精品久久| 亚洲性人人天天夜夜摸18禁止| 欧美亚洲另类丝袜综合| 国产精品人人做人人爽| 欧美日韩在线亚洲综合国产人| 成人看片黄a免费看那个网址| 亚洲欧美色综合影院| 精品综合久久久久久97| 国产爆乳成av人在线播放| 女人被男人爽到呻吟的视频| 伊人依成久久人综合网| 亚洲色无码专线精品观看| 国产成人一卡2卡3卡四卡视频 | 亚洲综合久久一区二区| 久久婷婷狠狠综合激情| 亚洲日本一区二区三区在线| 国产人妻精品午夜福利免费| 国产999精品成人网站| 午夜爽爽爽男女污污污网站| 国产亚洲精品线观看动态图| 中中文字幕亚洲无线码| 拍真实国产伦偷精品| 亚洲欧洲日产无码中文字幕| 久久se精品一区精品二区国产| 色婷婷久久一区二区三区麻豆| 久久这里只有精品青草| 国产亚洲精品资源在线26u| 久久se精品一区二区三区| 色又黄又爽18禁免费视频| 国产av影片麻豆精品传媒 | 国产天堂久久天堂av色综合| 国产亚洲欧美日韩夜色凹凸成人| 天堂网www在线资源| 久久av无码αv高潮αv喷吹| 免费精品一区二区三区第35| 久久久噜噜噜久久免费| 日本亚欧热亚洲乱色视频| 中文字幕亚洲色妞精品天堂| 无码视频在线播放| 日本精品人妻无码免费大全|