St. Petersburg is a major trade gateway, financial and industrial center of Russia specialising in oil and gas trade, shipbuilding yards, aerospace industry, radio and electronics, software and computers; machine building, heavy machinery and transport, including tanks and other military equipment, mining, instrument manufacture, ferrous and nonferrous metallurgy, chemicals, pharmaceuticals, medical equipment, publishing and printing, food and catering, wholesale and retail, textile and apparel industries, and many other businesses. 10% of the world's power turbines are made here at the LMZ, which built over two thousand turbines for power plants across the world. Wikipedia