Nicolaas Theodorus Oostveen

PQ Holdings, Inc. operates as an integrated global innovator. It also manufactures specialty inorganic performance chemicals, specialty catalysts and specialty glass materials. The company's business produces sodium silicate, specialty silicas and other high performance chemical products for the personal care, food, detergent, pulp and paper, electronics, mining, oil processing and construction industries. PQ Holdings was founded on June 22, 2007 and is headquartered in Chula Vista, CA.

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.

Harris Chemical Group, Inc. produces soda ash and boron products. It is a subsidiary of IMC Global, Inc. The company is headquartered in New York City, NY

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.

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.

General Chemical Corp. supplies specialty chemicals. Its soldering fluxes are designed to reduce or virtually eliminate corrosion in soldered joints. The firm’s paint strippers are used for substrate such as aluminum, ferrous metals and other surfaces. The company was founded in 1980 and is headquartered in Brighton, MI.

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.

Founded in 1957, Potters Ballotini Ltd. is a subsidiary of Potters Industries LLC. The company manufactures and markets glass beads and is based in South Yorkshire, UK.

PQ Germany GmbH manufactures industrial chemicals. The company is headquartered in Wurzen, Germany.