... .Shelf Life: one yearUse:used in feed, preserves, waste water treatmentand water purity, disinfection, rubber, leather,washingpowder, livestock feed, pencils. ... in a cool and dry place;avoid contact sunshine ,water and moisture;avoid contact with strong acid,oxidants or poisonous ... over ten countries and regions, like the USA, Europe, Canada, Japan and South Korea, enjoying great prestige both at home ...