Sigma Group

Sigma Group is a global leader in refractory solutions for the glass manufacturing sector, specializing in high-quality materials like Mullite, High Purity Alumina, Zirconium/Mullite and more. With a deep passion for excellence, we are dedicated to enhancing the efficiency and sustainability of high-temperature industrial processes within the glass industry. Our state-of-the-art facilities in Italy and Bulgaria feature advanced machinery and one of the industrys most sophisticated laboratories. This enables us to maintain rigorous control over research, development, and quality assurance. Our products deliver exceptional durability, thermal resistance, and reliability, even in the most demanding glass manufacturing environments. Thanks to our lean and agile structure, we offer unparalleled flexibility and swift decision-making. We provide customized solutions tailored to each clients specific needs, ensuring optimal performance in glass production processes. Our range of vibrocast a...