Some of the leading manufacturing companies in El Salvador are Grupo Q, Industrias La Constancia, and Grupo Terra. These companies have established a reputation for quality products and services and have contributed to the country's economic development. They produce a range of goods, including textiles, clothing, processed foods, beverages, plastics, chemicals, and electronic products. El Salvador's capital and largest city is San Salvador. As of 2015, the country had a population of approximately 6. 3M in revenue, AES El Salvador is ranked first on the list, followed by DIANA with $512.