Prior to the introduction of ozone, chilled brine was used to maintain the quality of the fish. This worked for up to about 5 days, after that time the fish was unmarketable. Since ozone has been implemented in fish holds, the fish can be held in a marketable condition for as much as 21 days (in ideal conditions). Azco Industries LTD can owe its existence to supporting local fishing fleets as this was one of the original application on which AZCO was founded. We look forward to working with your engineers to help incorporate ozone into their fish hold systems.