Dear sir/madam, Our clients are looking for RO water filters  R O Systems (Reverse osmosis) for purifying water.  500 lt, 1000 lt, 1500 lt, 2000 lt, per hour industrial RO systems.  If you deal in the above product please contact us asap. This is an urgent inquiry and will result in an instant, monthly repeated order if the prices are right. Best regards Soney