Dear Sir/Madam, My name is Minh. I wokr for Vietnam Institute for Building Science and Technology (IBST). Now I have been using some chemical product for concrete and building. Now, we have been researching superplasticizer admixture type F (ASTM C494:92)base on sulfonated naphthalene formaldehyde. This admixtures will be use for ready mixed concrete plants in Viet nam. . Therefore we need big amount of sulfonated naphthalene formaldehyde with good price. I know that your companies have this product for concrete admixtures. Therefore I want to know detail technical information, its price and how to buy them. I look forwards your inform soon. Please contact with me Dr. Nguyen Hung Minh Concrete Department Vietnam Institite for Building Science and Technology Best regards, Nguyen Hung Minh Show More