water soluble bag, packing Iron Oxide, pigment, dyestuff, fibres. Water soluble bag for concrete additivesConcete additive has the ... cement additives such as Iron Oxide pigment, Titanian Dioxide( Anatase), Chromium Oxide ect.Advantage for using water soluble bag:Using PVA ... 70/75/80Dissolve temp:form 5-85 degree celsious Water soluble bag, packing cement additives. Professional manufacturer of ...