久久久久香蕉国产线看观看伊,精品国产美女a久久9999,日本国产一级片,欧美日韩久久精品,性欧美久久久,久久久精品午夜,91中文字幕在线播放

CN
CN
  • PCA?-Ⅷ High Performance Polycarboxylate Superplasticizer
    PCA?-Ⅷ High Performance Polycarboxylate Superplasticizer Download

    1565837596864342cc5w.jpg

    PCA ? -Ⅷ is a new generation superplasticizer with a base of modified polycarboxylic ether. It offers maximal water reduction, increased early strength, and enhanced finishing characteristics. PCA ? -Ⅷ contains no formaldehyde, calcium chloride or other purposely added chlorides and will not initiate or encourage the corrosion of the steel present in the concrete.