Specialty Granules (SGI) is a leading aggregates and mining company supplying specialized products to the North American building materials industry. With over 90 years of superior service, SGI is committed to serving its customers’ needs with industry-leading R&D, innovative products and high-touch support.

Schiedel is Europe’s leading manufacturer of flue-ducting, integrated stoves and ventilation systems for residential and commercial buildings. With over 70 years experience, Schiedel creates technically advanced, design-driven products to improve the living environment.