synthetic resins in the form of ion-exchangers; synthetic resins in the form of ion exchangers; unprocessed artificial ion-exchange resins for treating water used in power generation; unprocessed artificial ion exchange resins for treating water used in power generation; ion exchange resins for use in water treatment; ion-exchange resins for use in water treatment; artificial and synthetic resins, unprocessed; chemical products for use as adsorbents; chemical products for use in the manufacture of resins; styrene; ion-exchangers [chemicals]; ion exchangers [chemicals]; ion exchange preparations; ion-exchange preparations; ion-exchangers [chemical preparations]; ion exchangers [chemical preparations]; ion exchange resin membranes [chemical preparations]; chemical preparations in the nature of ion-exchange resins; ion-exchange resin membranes [chemical preparations]; ion-exchange resins [chemical preparations]