精品女同,亚洲第一区在线观看,天天狠天天干,噜噜噜噜天天狠狠,永久免费毛片手机版在线看,亚洲一级毛片免费在线观看,午夜影院啪啪

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.