成人国产aⅴ精品一区二区,天天射天天舔天天干,国产精品一区二区三区久久,国产精品免费久久久久电影网,久久久99久久久国产精品,精品国产一区二区三区久,日本高清不卡一区二区51 ,国产一区二区三区在线观

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.