Belgium has a well-developed free market economy, based on both industrial and service sectors. It is heavily dependent on international trade and most of its economic sectors are geared toward exporting products. Belgium's highly developed transportation infrastructure of ports, canals, railways, and highways further augment the country's economy. Belgium exports machinery and equipment, chemicals, diamonds, metals and metal products, and processed foods. The main imports are machinery, chemicals, raw diamonds, pharmaceuticals, foodstuffs, transportation equipment, and petroleum products. About 75% of trade is with other European Union countries, chiefly Germany, the Netherlands, France, and Great Britain.