1
water treatment chemicals, namely, chemicals used for the prevention of scale, corrosion and biological fouling in open re-circulating cooling water systems, steam boiler water systems and closed hot and chilled water systems and for minimizing water usage and water waste
11
water treatment equipment, namely, control equipment for the application of water treatment chemicals, namely, controllers, meters, pumps and valves, and pre-treatment equipment including softeners, reverse osmosis, chlorine-dioxide generators and electrochemical scale control equipment
40
water treatment services directed towards open re-circulating cooling water systems, steam boiler water systems and closed hot and chilled water systems, for minimizing water usage and water waste
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