Kelly Michael O'Brien

PQ Corp. produces silicate, zeolite, and other performance materials. It serves the detergent, pulp and paper, chemical, petroleum, catalyst, water treatment, construction and beverage markets. The firm's products include lithium silicates, magnesium sulfate, sodium silicate liquids and solids. It also manufactures silica gel products for catalyst and anti-blocking applications and the zeolite products for adsorbent applications. The company was founded by Joseph Elkinton in 1831 and is headquartered in Malvern, PA.

Babst, Calland, Clements & Zomnir, P.C. provides focused legal services to corporations, closely-held businesses and municipalities .Its services include real estate, construction, environmental, public sector and transportation safety. The company was founded in 1986 and is headquartered in Pittsburgh, PA.

Part of Ecovyst, Inc., PQ France SAS is a French company that manufactures basic inorganic chemicals. The company is based in Trosly Breuil, France. The CEOs are Joseph Steven Koscinski, William James Sichko. The company was founded in 2002.

Founded in 2007, PQ Silicas UK Ltd. is a subsidiary of Ecovyst, Inc. that manufactures inorganic basic chemicals. The company is based in Warrington, UK.

Part of Potters Industries LLC, Potters Ballotini SAS is a French company that engages in manufacturing and shaping glass articles. The company is based in Saint-Pourçain-sur-Sioule, France. The CEOs of the company are Joseph Steven Koscinski and William James Sichko.

Part of PQ Corp., Eco Services Operations Corp. is a company that produces sulfuric acid for oil refiners. The company is based in Malvern, PA.

Part of Potters Industries LLC, Potters Ballotini Acquisition GmbH provides business and economic services. The company is based in Kirchheimbolanden, Germany. The CEOs are Joseph Steven Koscinski, Warwick Mayall. The German company was founded in 2010.

Part of Potters Industries LLC, Potters Ballotini GmbH is a German company that manufactures and distributes plastic products. The company is based in Kirchheimbolanden, Germany. The CEOs are Joseph Steven Koscinski, Warwick Mayall. The company was founded in 2011.

Part of PQ Corp., Beads Belgium SA is an investment holding Belgian company. The company is based in Fleurus, Belgium. The CEOs are Kelly O'Brien, Maria Fernandez Menendez, Sylviane Meeus. The company was founded in 1995.