Sodium Naphthalene Sulphonate, Concrete Superplasticizer, Snf manufacturer / supplier in China, offering Naphthalene Superplasticizer (SNF) for Concrete Admixture, Sodium Naphthalene Sulphonate Formaldehyde (FDN), Sodium Naphthalene Sulfonate Formaldehyde/Snf/Pns/Fdn/Naphthalene Superplasticizer, Sodium Naphthalene Sulphonate Superplasticizer Fdn and so on.