Serviço Nacional de Aprendizagem Industrial (SENAI), Portuguese language for National Service for Industrial Training is a network of not-for-profit secondary level professional schools established and maintained by the Brazilian Confederation of Industry (a patronal syndicate). SENAI is one of the most important institutions in the country providing formal training for specialized workers for the industry, in the areas of chemistry, mechanics, construction, etc. SENAI has 744 operational units in all states of the Union, which offer more than 1,800 courses. SENAI is part of an integrated social action system which was founded by industry and political leaders in the 1950s, under the leadership of Euvaldo Lodi, which includes SESI (Social Service for Industry), and the Instituto Euvaldo Lodi.