It is the condensation compound of formaldehyde and naphthalene sulfonic acid; is a good non-air bleed high efficiency water reducing agent. It can be used in the prestressed unit and concrete engineering of highway, port and high-rise. We also could supply the other type water reducer such as poly-carboxylate superplasticizer, sulfonated melamine-formaldehyde resin superplasticizer. 25kg bag