在线观看国产精品日韩av,毛色毛片免费观看,久久无码人妻精品一区二区三区,亚洲人成电影网站色-西西人体大胆午夜啪啪_亚洲 欧美 偷自乱 图片_国产激情З∠视频一区二区_亚洲AV

Welcome to visit Changzhou Chengbang Chemical Co., Ltd. official website!

Collection ｜Homepage ｜中文版

More>>
Resorcinol
Product name: Resorcinol
CAS NO: 108-46-3
Molecular weight: 110.1106 
EC NO: 203-585-2
Molecular formula: C6H6O2
InChI: InChI=1/C6H6O2/c7-5-2-1-3-6(8)4-5/h1-4,7-8H
Structural formula:
  Order                   Back