water soluble bag, packing Iron Oxide, pigment, dyestuff, fibres. Water soluble bag for concrete additivesConcete ... PVA bag for the packaging of cement additives such as Iron Oxide pigment, Titanian Dioxide( Anatase), Chromium Oxide ect.Advantage for ... 5-85 degree celsious Water soluble bag, packing cement additives. Professional manufacturer of only water-soluble materials.