Naphthalene sulfonate formaldehyde condensates sodium salts is mainly used for concrete admixtures.In China,naphthalene sulfonate formaldehyde condensates sodium salts is classified AS CONCRETE ADMIXTURES,HIGH RANGE WATER REDUCER,The HS CODE is 3824401000.
But in fact,Naphthalene sulfonate formaldehyde condensates sodium salts also can be used for pigment dispersing agent,and the HS CODE is not 3824401000,its HS CODE is 3809910000.