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Ecovyst Inc. offers specialty catalysts and services in the United States and internationally. The company operates in two segments, Ecoservices and Advanced Materials & Catalysts. The Ecoservices segment provides sulfuric acid recycling services and end-to-end logistics for production of alkylate for refineries; and virgin sulfuric acid for mining, water treatment, and industrial applications. The Advanced Materials & Catalysts segment offers advanced materials and specialty catalyst products and process solutions to producers and licensors of polyethylene and advanced silicas. This segment also supplies specialty zeolites and zeolite-based catalysts to customers for refining of oil primarily hydrocracking catalyst and dewaxing, sustainable fuels, and emission control systems for both on-road and non-road diesel engines. The company was formerly known as PQ Group Holdings Inc. and changed its name to Ecovyst Inc. in August 2021. Ecovyst Inc. was founded in 1831 and is headquartered in Malvern, Pennsylvania.

GCP Applied Technologies Inc. produces and sells specialty construction chemicals and specialty building materials worldwide. The company's Specialty Construction Chemicals segment offers concrete admixtures under the CONCERA, CLARENA, ADVA, CLARENA RC40, STRUX, MIRA, TYTRO, POLARSET, ECLIPSE, DARACEM, DARASET, DCI, RECOVER, WRDA, and ZYLA brands; admixtures for decorative concrete under the PIERI brand; concrete production management and control systems under the VERIFI brand; engineered concrete slab systems under the DUCTILCRETE brand; and cement additives under the OPTEVA HE, TAVERO VM, CBA, SYNCHRO, HEA2, TDA, and ESE brands. Its Specialty Building Materials segment provides building envelope products to protect structures from water, and manages air and vapor transmission through building walls under the BITUTHENE, PREPRUFE, ADPRUFE, HYDRODUCT, ADCOR, SILCOR, PERM-A-BARRIER, ELIMINATOR, INTEGRITANK, and RIW brands; residential building products comprising specialty roofing membranes and flexible flashings under the ICE & WATER SHIELD, TRI-FLEX, VYCOR, and ULTRA brands; fire protection materials under the MONOKOTE brand; chemical grouts for repair and remediation in waterproofing and soil stabilization applications under the DE NEEF, HYDRO ACTIVE, SWELLSEAL, DE NEEF, and PURe brands; cementitious grouts and mortars used for under filling and gap filling under the BETEC brand; and specialty flooring products, such as flooring moisture barriers and installation products under the KOVARA and ORCON brands. The company was incorporated in 2015 and is headquartered in Alpharetta, Georgia.

Innospec Inc. develops, manufactures, blends, markets, and supplies specialty chemicals in the United States, rest of North America, the United Kingdom, rest of Europe, and internationally. The company's Fuel Specialties segment offers a range of specialty chemical products that are used as additives in additives in diesel, jet, marine, fuel oil and other fuels. This segment's products are used in the operation of commercial trucking, marine and aviation engines, power station generators, heating oil, and other industrial machinery applications. Its Performance Chemicals segment provides technology-based solutions for its customers' processes or products that focuses on the personal care, home care, agrochemical, construction, mining, and other industrial markets. The company's Oilfield Services segment develops and markets chemical solutions for drilling, completion, fracturing, stimulation, and completion operations; and products for oil and gas production. It sells its products primarily to oil and gas exploration and production companies, oil refineries, fuel manufacturers and users, personal care and home care companies, formulators of agrochemical, and other chemical and industrial companies. The company was formerly known as Octel Corp. and changed its name to Innospec Inc. in January 2006. Innospec Inc. was founded in 1938 and is headquartered in Englewood, Colorado.

Ingevity Corporation manufactures and sells activated carbon products, derivative specialty chemicals, and engineered polymers in North America, the Asia Pacific, Europe, the Middle East, Africa, and South America. It operates through three segments: Performance Materials, Performance Chemicals, and Advanced Polymer Technologies. The Performance Materials segment engineers, manufactures, and sells hardwood-based and chemically activated carbon products for use in gasoline vapor emission control systems in cars, motorcycles, trucks, and boats. This segment also produces other activated carbon products for food, water, beverage, and chemical purification applications. The Performance Chemicals segment consists of road technologies and industrial specialties. This segment's products are used in pavement construction, pavement preservation, pavement reconstruction and recycling, road markings, agrochemical dispersants, paper chemicals, and other industrial uses. The Advanced Polymer Technologies segment produces caprolactone and caprolactone-based specialty polymers for use in coatings, resins, elastomers, adhesives, bioplastics, and medical devices. It serves automotive parts and components manufacturers through sales representatives and distributors. The company was formerly known as WestRock Company, Specialty Chemicals Business and changed its name to Ingevity Corporation in September 2015. Ingevity Corporation was founded in 1964 and is headquartered in North Charleston, South Carolina.

Ecovyst, Inc. engages in the manufacture of specialty catalysts, materials and chemicals. It operates through the following segments: Refining Services, Catalysts and Performance Chemicals. The Refining Services segment offers sulfuric acid, virgin sulfuric acid, Oleum ECO services, sulfuric acid regeneration, aluminum sulfate, treatment services and industrial field services. The Catalysts segment includes zeolites, anti-blocking agents, chemical catalysis, polyolefin supports, chrome catalysts for high-density polyethylene, and polyolefin catalysi. The Performance Chemicals segment supplies personal and industrial cleaning products, fuel-efficient tires, surface coatings, and food and beverage products. The company was founded on August 7, 2015 and is headquartered in Malvern, PA.