Every molecule counts

About Us

Mission and Vision

At Tessenderlo Kerley, our mission is to nurture and enhance life by providing sustainable solutions for agriculture and industrial markets worldwide. We are dedicated to delivering products and services that maximize resource efficiency. Our success is driven by our people, who uphold our seven core values: Safety, Customer-Centricity, Entrepreneurial Spirit, Environmental Stewardship, Integrity, People, and Teamwork. These values guide everything we do, ensuring we deliver value to our customers and communities. As part of the Tessenderlo Group, a global company specializing in agriculture, industry, and valorizing bio-residuals, we believe that every molecule counts.

Our History

Today's Tessenderlo Kerley, is part of Tessenderlo Group, founded in 1919 and the descendant of The Kerley Chemical Company, established in 1947 by four brothers in Pecos, Texas. Recognizing a growing demand for sulfur plant nutrition, the Kerley brothers developed a unique process for manufacturing sulfur-based liquid fertilizers that are safe, easy to handle, and can be applied through irrigation equipment. Over the years, Tessenderlo Kerley has grown through acquisitions and ownership changes, establishing itself as a leader in the production and marketing of specialty products used in agriculture, mining, and process chemical industries. In 1995, Belgium-based Tessenderlo Group acquired the Kerley business, maintaining its focus on processing refinery byproducts into added-value chemicals.

Every Molecule Counts

Tessenderlo Group is driven by a bold and inspiring vision: to ensure that life on our planet thrives by helping to create a world that makes the most of its resources. This vision involves growing more food than ever before, using water intelligently, addressing the world's shortage of natural resources, and creating value from bio-residuals.

We strive to fully understand global challenges and build the business of tomorrow by addressing these issues innovatively. Our philosophy, "Every Molecule Counts," defines our unique approach to sustainability and practical innovation. It highlights the power of even the smallest idea or action to change the world.

Tessenderlo Group continually seeks more sustainable solutions, aiming to minimize our ecological footprint and maximize the contribution of our products towards a green economy. We offer various products and environmentally friendly solutions, often reclaiming and transforming by-products from other industries.

Whether in the products and solutions we provide or the way we produce them, our care for the planet and its resources is at the heart of all our businesses. We believe that every molecule counts.

Tessemderlo Group logo

Tessenderlo Group (Euronext: TESB) is a global industrial group that focuses on agriculture, valorizing bio-residuals, machinery, mechanical engineering, electronics, energy, and industrial solutions for water management. Its belief that “Every Molecule Counts” is at the heart of the strategy of the group: Tessenderlo Group continually strives to valorize its products and processes to the maximum and to add value to everything it does. With its headquarters in Belgium, the group is active in over 100 countries and it has a global team of more than 7,500 employees. In 2023, Tessenderlo Group recorded a consolidated revenue of 2.9 billion EUR.
For more information about Tessenderlo Group, its people, its brands, and its results, please visit www.tessenderlo.com.