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Company return

The company is renowned and a 100% national capital enterprise; it began its operations in 1974. SIL supplies safe and long-lasting electrical wires and cables at a competitive price and its certified quality complies with currently applied technical standards.

It has implemented a set of marketing initiatives, sincerity in its policies, and good relationships with its partners and suppliers, honest targets and guidelines, as well as initiatives in advanced technologies, strict quality control, professional valorization, and respect for the consumer have made SIL become renowned as one of the main Brazilian companies in this market segment.


The company began its activities in the 1950s, as the Elétrica Danúbio Company, exclusively actuating in the distribution of electrical supplies in São PauloCity and Greater São Paulo.

In 1974, it also started to manufacture wires and cables, with its small industrial installation in the section of Tatuapé, after that it moved to the traditional industrial district of Mooca, after changing its brand name to SIL.

It displayed impressive growth in its market presence, and then SIL needed to expand its production line and infrastructure. Therefore it moved in 2001 to the city of Guarulhos (SP), set up a modern Industrial and AdministrativeCenter with 30,000 m² floor space.  

Nowadays SIL holds a consolidated market share in its segment, supplying quality products throughout the entire country and achieving recognition and has been awarded several prizes, to confirm its brand name leadership among retailers and specifiers.