Eduardo Romeu Ferraz

Magnesita Refratarios SA engages in the provision of refractory solutions, services, and industrial minerals. It operates through the following segments: Refractory Solutions, Minerals, and Services. The Refractory Solutions segment offers bricks, masses, mortars, valves, and pre-molded concrete. The Minerals segment comprises of magnesite sinter and caustic magnesia. The Services segment includes processes ranging from refractory assembly and removal to monitoring the customer's production process and conducting post mortem tests. The company was founded in 1939 and is headquartered in São Paulo, Brazil.

The Group's principal activities are to manufacture, sell and distribute heat-resistant products used in the construction of high temperature industrial furnaces. Products include bricks, paste, mortar, cement and concrete.The Group also exports its products to Europe, Asia and Latin America .

BRT Holding 1 SA is engaged in financial investment and shareholding activities. Its interests focus on the telecommunications infrastructure industry. The company was founded on December 29, 2007 and is headquartered in São Paulo, Brazil.