... , packing Iron Oxide, pigment, dyestuff, fibres. Water soluble bag for concrete additivesConcete additive has the nature of alkali, acidity and high ... discommodity to operating. We suggested to use PVA bag for the packaging of cement additives such as Iron Oxide pigment ... Dioxide( Anatase), Chromium Oxide ect.Advantage for using water soluble bag:Using PVA bag for packing, it can measure exactly, avoid ...