We are HS CO., LTD company with 100% Korea capital company .we produce and trading PCA (Polycarboxylic acid )- our factory is in VIETNAM We are Manufacturer and supply two kinds of products for concrete admixtures production with HS’S advanced synthetic process. Our products: D-40 with high dispersion ability (low W/C), improved concrete setting time , low concrete viscosity , economical concrete design. R-40 with slump retention , low concrete viscosity good combination with dispersion(D-40) Expecially our products can also be applied in civil engneerings and industrial construction. we always try to provide high quality products with strictly quality control at reasonable price .