Complex sentence: The industry is concentrated mainly in Guayaquil, the largest industrial center, and in Quito where in recent years the industry has grown considerably, this city is also the largest business center of the country.
Split into simpler sentences: The industry is concentrated mainly in Guayaquil, the largest industrial center, and in Quito, where in recent years the industry has grown considerably. This city is also the largest business center of the country.