About Us
Protecting what matters most, securing everyone's future
Our vision is based on a deep conviction: magnesia, although having unsuspected properties, holds the key to our technological and environmental future.
This fundamental mineral resource, present in every aspect of our daily lives – from the soil that nourishes us to the structures that protect us – holds applications potential that are still largely unexplored and it is our duty to preserve it. This is why, more than just a producer of Magnesia, we are committed to being its guardians and protectors.
Our Mission: Unlocking the potential of magnesia
What drives us? To unleash all the possibilities offered by magnesia now, through research and innovation, while reconciling performance and the necessary responsibility for a sustainable future.
To fully exploit its potential, each of our decisions and actions is guided by a strong commitment: to combine bold innovation with precise expertise. From the care of our magnesium carbonate mining to the commercialization of magnesium solutions;, we have complete control over the value chain.
At every stage, our customers benefit from unparalleled quality and reliability, making Terresis a key player, recognized for the excellence of its know-how and the high standards of its cross-sector expertise.
Where others see only isolated areas, we choose to explore all the possibilities of this exceptional mineral thanks to our cross-sector expertise. We are not just producers, we don’t just extract magnesia: we reinvent its place in the modern world, transforming every environmental challenge into an opportunity for innovation, to offer the industries of tomorrow solutions that are both efficient and sustainable.
Our Commitment: Collect and Act responsibly
At Terresis, we envision a world where rigorous scientific research and bold innovation make it possible to reveal new possibilities for the use of magnesia every day. Thus, paving the way for revolutionary solutions in nutrition, industry, refractory, construction and beyond.
With this perpetual exploration comes a fundamental responsibility: to maintain a balance between exploiting this precious resource and preserving our planet. Thanks to continuous research, the unwavering commitment of our teams, and our ability to invent and experiment; we act responsibly by tackling the environmental issues related to our activity.
Our goal: to ensure the right balance between what we take and the preservation of what we hold most dear, our planet and its inhabitants. It is in this balance between scientific discovery and ecological awareness, that Terresis forges its vision for a future where industrial performance and environmental sustainability are one.
Terresis brings together women and men from various backgrounds, united by a common ambition: to explore the potential of magnesia while reconciling performance and sustainability.
Driven by our expertise, our experience forged over generations and a boldness that pushes boundaries, our teams don’t just develop magnesium solutions: they reinvent the way the world uses magnesia.
Pioneers in the fields of extraction, production and marketing, they innovate to meet today’s challenges, while anticipating and protecting tomorrow’s resources. Their cutting-edge skills combined with their unwavering customer commitment position us as a true and trusted partner.
Explore our four magnesia application areas:
The Groupe Roullier, the strength of a future-oriented ecosystem
Present throughout the world, the Groupe Roullier embodies industrial excellence and avant-garde spirit. Performance, innovation and continuous improvement have always been anchored in its DNA, allowing its activities to explore the possibilities and meet the challenges of tomorrow.
More than 10,300 employees (75% of whom are international,), diversified activities with high
value-added, 2.8 billion euros in consolidated turnover… The Groupe Roullier offers substantial means to grow Terresis and develop new solutions adapted to human needs: exploration of new markets, development of innovative applications and securing strategic resources for the future of all.
