SIO-2 Plus Clay

Since 1874. We are a manufacturer of ceramic clays for industry, pottery, and artistic ceramics, and natural modelling clays for crafts, fine arts, and education.

Based in Barcelona (Spain), SIO-2® combines craftsmanship, innovation, and sustainability to create high-quality clays trusted by artists, studios, and professionals worldwide.

Our goal is to innovate with natural materials, developing products that meet the needs of the most demanding users. In every clay we produce, we bring together experience, passion, and precision, caring for every detail, from conception to the final manufacturing process.

Our ISO 9001:2015 certified Quality System ensures continuous improvement, while social responsibility and environmental respect are core values of our company philosophy.

Always in your hands, SIO-2® is your brand.