Santo Andre is a Brazilian municipality located in the Metropolitan Region of Sao Paulo, including a group of municipalities known as Greater ABC Region. The settlement, which became a town in 1553, with the name of Santo Andre da Borda do Campo, experienced rapid growth beginning in the 1930s. It was originally named Sao Bernardo because the municipality district headquarters were in Sao Bernardo do Campo, now a city nearby. In 1938, the name was changed to Santo Andre, as the district government was transferred to Santo Andre. Industries include chemical engineering, textiles, oil, metal products, metallurgy and printed matter.It is an industrial city, but more than 60% of Santo Andre's total area are protected by environmental water laws.