亚洲精品aⅴ在线观看,综合久久狠狠色99h中午,欧美日韩中文 ,天天摸天天爽天天碰天天弄,国外自产拍无码精品视频在线观看,91成人免费福利网

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

Collection ｜Homepage ｜中文版

More>>
Potassium hydroxide
Product name: Potassium hydroxide
CAS NO: 1310-58-3;71769-53-4
Molecular weight: 57.113 
EC NO: 215-181-3
Molecular formula: KOH
InChI: InChI=1/K.H2O/h;1H2/q+1;
Structural formula:
  Order                   Back