PQ Corporation is a leading provider of specialty catalysts, chemical intermediates, and engineered solutions headquartered in Malvern, Pennsylvania, United States. Founded in 1831 as the Philadelphia Quartz Company, the company has a rich history of over 190 years. It initially started as a manufacturer of high-quality glass for the growing chemicals industry.

Today, PQ Corporation operates through three business segments: Refining Services, Performance Chemicals, and Catalysts. The Refining Services segment offers high-quality sulfuric acid and sulfur derivatives that are used in diverse industries such as automotive, oil refining, and electronics. The Performance Chemicals segment provides specialty chemicals such as sodium silicate, potassium silicate, and magnesium silicate which are used in various industries such as construction, food and beverage, and personal care.

The Catalysts segment offers catalyst products and services for the polyethylene (PE) and polypropylene (PP) industries, enabling efficient and sustainable production of plastic materials. PQ Corporation has a global presence with manufacturing facilities and sales offices in over 20 countries. The company's noteworthy subsidiaries and joint ventures include its ownership in PQ Silicas BV, a joint venture with The Sibelco Group, which focuses on manufacturing silica materials globally.

PQ Corporation also has partnerships with leading chemical companies to develop innovative solutions and expand its market reach. In terms of market position, PQ Corporation is recognized as a global leader in its specialty sectors. It maintains a strong competitive position by consistently delivering high-quality products and providing world-class customer service.

With its global sales network, the company has established strong relationships with customers across various industries and continues to expand its market share. A major event in PQ Corporation's recent history was the acquisition of Eco Services, a provider of sulfuric acid recycling services, in 2020. This acquisition further strengthened PQ Corporation's position in the sulfuric acid market and expanded its capabilities in providing sustainable solutions.

As of the latest information available, PQ Corporation continues to focus on innovation and sustainability, driving its growth and serving as a reliable partner to its customers worldwide. The company remains committed to providing high-quality products, expanding its global presence, and meeting the evolving needs of its customers