Since the early 1900s, Knight Material Technologies has grown to be one of the world’s largest ceramic mass transfer and acid-proof equipment manufacturers. A leader in acid-proof solutions and corrosion solutions, Knight Material Technologies (KMT) holds capabilities in construction, engineering, and services by working with state-of-the-art ceramics and plastic materials. KMT’s products and services are available worldwide through a global network of manufacturing and outsourcing ceramic and plastic facilities focusing on responsive, customer-focused results. The company prides itself on being there when customers need customized solutions. Whether it is a revamp or new construction, KMT will assist you with every step to ensure speedy completion and successful results from start to finish. Knight Material Technologies was previously known as Koch Knight and part of Koch Engineered Solutions. In December of 2021, Koch Knight became Knight Material Technologies after a divestiture to Hill Street Capital. The new company has expanded its innovative solutions, services and infrastructure to meet a growing market.

Ironrock manufactures Metropolitan Ceramics® quarry tile, Down to Earth® textured quarry tile and METROBRICK® architectural thin brick.

The Bowerston Shale Company is a company based out of 515 Main Street, Bowerston, Ohio, United States.

Superior Clay Corporation produces and designs components for masonry fireplaces in a complete range of styles and sizes. Superior Clay provides complete technical support. Our products are hand crafted with a passionate attention to detail, and our service and support are what you might expect from a trusted friend. Superior Clay manufactures quality handcrafted clay products used in custom fireplaces, wood-fired ovens and other ornamental, architectural products.

The AFL-CIO represents people who work. We are the umbrella federation for U.S. unions, with 57 unions representing more than 12.5 million working men and women. The American Federation of Labor and Congress of Industrial Organizations is an expression of the hopes and aspirations of the working people of America. We resolve to fulfill the yearning of the human spirit for liberty, justice and community; to advance individual and associational freedom; to vanquish ­oppression, privation and cruelty in all their forms; and to join with all persons, of whatever nationality or faith, who cherish the cause of democracy and the call of solidarity, to grace the planet with these achievements. We dedicate ourselves to improving the lives of working families, bringing fairness and dignity to the workplace and securing social equity in the nation.

Superior Clay Corporation produces and designs components for masonry fireplaces in a complete range of styles and sizes. Superior Clay provides complete technical support. Our products are hand crafted with a passionate attention to detail, and our service and support are what you might expect from a trusted friend. Superior Clay manufactures quality handcrafted clay products used in custom fireplaces, wood-fired ovens and other ornamental, architectural products.

From its humble beginnings in 1912, the modern day Summitville Tiles has reached out beyond the boundaries of the tiny little Ohio village for which it was named to become a leading force in the American ceramic tile industry. In the face of unprecedented global competition, Summitville is the only charter member of the tile industry's national trade association to remain in business. When high traffic areas, chemicals, acids, oils and daily cleaning with harsh detergents are involved, Summitville Tiles is the dependable choice. Summitville Tiles'​ tile are extruded to provide uniform density, strength and rugged performance in high-traffic areas. Summitville is the only company that manufactures, both the tile and the installation materials necessary for completing the job, offering a turnkey system from a single source with a proven reputation of quality and performance. From chemical resistant membranes to custom blended epoxies Summitville's products have produced results that reach far beyond the most demanding expectations. Summitville's centennial anniversary was a tribute not only to a century of corporate endurance, but to the hundreds employees and thousands of customers that have contributed to its success in so many ways all of these years.

McDanel Advanced Ceramic Technologies is a leading manufacturer of high quality industrial and advanced technical ceramics. McDanel has the ceramic solution you need - whether it’s engineered to your specifications or from our large stock of standard products that are available for purchase online. These products are made from a variety of technical ceramic bodies including Alumina, Mullite, Zirconia, and Sialon. We have been the preferred supplier of technical ceramic products to major industries worldwide for electrical, wear-resistant, high temperature, and corrosion-resistant applications. Our customers choose to partner with us based on our leading ceramic technology, research and development, and commitment to the industries we serve. Our experienced engineers specialize in developing custom prototypes to full-scale production of ceramic components. These engineers will work exclusively with you to custom-design products to provide the optimum cost effective solution to your demanding application. We are 100% committed to our customers and to continual quality improvements, which has always been the cornerstone of our corporate philosophy. ISO 9001 certified.