We provide fully integrated, sustainability-based product, services, and solutions to infrastructure industries around the world.

Kopper's Chocolate invented many of the chocolate covered products you enjoy today. Since 1937 our family business has focused on quality and innovation.

Koppers Performance Chemicals develops revolutionary ways to pressure treat lumber for residential construction, remodeling, commercial building, heavy duty marine and agricultural use. Koppers …

Trusted manufacturers of pressure-treated wood products for the railroad industry, Koppers has been the largest provider of railroad crossties for the Class I Railroads in North America for more than 25 …

Kopper's was the first chocolate company to produce kosher chocolates under national supervision (the Circle K). We were the first to focus on the sophisticated tastes of semisweet and bittersweet …

At Koppers, employees at every level of the company have the opportunity to make an impact. Join our team and help us Protect What Matters and Preserve the Future.

Transforming and protecting global infrastructure with industry-leading products and sustainability-focused services is what we do—but who we are is so much more. Treating people the right way, …

Kopper's was the first chocolate company to produce kosher chocolates under national supervision (the Circle K). We were the first to focus on the sophisticated tastes of semisweet and bittersweet …

Fred was very good with machinery, and partnered with a European chocolatier, David Kopper, to form the company. Their intention was to combine Old World sensibilities with New World technology, …

As an integrated global provider of wood preservation technologies and carbon compounds primarily used for railroad crossties, utility poles, and outdoor wooden structures, we take pride in the critical …