GMM was founded in the early 1990s in Gravellona Toce, Italy, by a group of engineers with over 3 decades of experiences in stone machinery, focusing on bridge cutters design & manufacturing for the natural & synthetic stone & ceramics industries. Soon after, GMM invented, patented, expanded and evolved to be the leader in 3-5 axis bridge cutters, edge polishing and water-jet machines in the world. Since its inception, the GMM group has delivered over 9000 machines to customers in more than 80 countries.