Where is the biggest industrial center in Brazil?

The biggest industrial center in Brazil is the São Paulo metropolitan area, in the southeastern region of the country. It is the largest urban area in Brazil, with a population of over 21 million people. São Paulo is a major industrial, commercial, and financial hub, and is home to a diverse range of industries, including automotive, food processing, machinery, chemicals, and textiles. The city is also a major center of higher education and culture, with several universities, museums, and theaters.