This product, named sodium naphthalene sulfonate formaldehyde, is non-air entraining superplasticizer. It has good dispersing performance to the cement particles. Compared with traditional plasticizer, it has higher water reducing rate, and good performance for high flowing concrete, case-in-place concrete which require for early and high strength, precast concrete and parts etc. It also has good adaptability to common cement, widely use in roads, bridges, dams, power engineering, civil construction and others.