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The Solenis Story Whether you're an engineer, technical director or a plant manager in a paper mill, oil refinery, or dairy processing plant, or an owner or operator of a pool or spa, we can help you improve your operational efficiency, reduce your environmental impact, meet the hygiene requirements for your facility, and maintain the cleanliness and health of your water. That’s exactly what we’ve been doing since our founding more than 100 years ago. Today, we're a leading specialty chemical supplier and water treatment company with a truly global footprint. With over 16,100 employees and 69 manufacturing facilities, our operations span 130 countries and six continents. Throughout our rich history, we've operated under many different names: Drew, Betz Laboratories, Hercules, Stockhausen and Ashland Water Technologies. But our guiding principle has never changed: we help you solve your toughest challenges.