Heat exchangers not machine parts, moisture exchangers, namely, moisture exchangers for use in relation to water cooling towers, exchange elements and inserts for water cooling towers, splash deflectors for cooling towers, inserts for filtering air and water, gas scrubbers, ventilating apparatus and equipment, namely, air-conditioning apparatus and installations, humidifiers for conditioning air and gases, cooling evaporators

Novelty Item Consisting of Gold Flakes on a Card Accompanied with a Certificate