The core activity of Proval SARL is to provide consulting and trading services to the metal and petrochemical industries. Specifically, this includes: trading in complex materials such as concentrates, waste streams, secondary and primary metals; investments in pre-treatment and processing facilities; consulting services to solve complex problems and support turnaround projects; metallurgy and mining, including process and flow sheet modeling; and independent audits. The company provides access to highly qualified experts who can support customers in solving critical challenges and improving their operations.