Querétaro’s major cities are home to industrial complexes that produce machinery and other metallic products, chemicals and processed foods. However, most of the state’s manufacturing companies are located in or around the city of Querétaro. Carnation and Purina are among the best-known food processing companies with facilities in the state, and numerous textile mills manufacture clothing made of wool, cotton and henequen. One of the biggest employers is Tremec, an auto parts manufacturer. Currently, there are 392 companies with direct foreign investment and 238 exporting companies that have located in the state. Exports in 2002 totaled $3.35 billion USD, and direct investment in 2003 reached $169 million. Many of these companies are headquartered in modern industrial parks, one of the newest and most technologically advanced being El Marques Industrial Park. This facility was inaugurated in 2003, with an initial investment of $13 million USD. The park occupies a space of with international tenants from Italy, Germany, Spain, the US, Taiwan as well as Mexico representing real estate, automotive, carton packing, food processing and some high tech enterprises. One of these tenants is Siemens whose plant is dedicated to manufacturing equipment for high voltage systems.