Sigma celebrates its 30th anniversary this year and is now in its third generation.
A family-company working with passion and flexibility, Sigma has been operating in the refractory market since 1990. High specialization and continuous investments over the years in both manufacturing facilities, one in Italy and the other in Bulgaria, have allowed Sigma to meet the growing demands of the glass market supplying the complete range of materials for glass furnaces.
Via delle Grigne, 12/A, 22070, Locate Varesino (CO) Italy
Phone: 39 0331 823195