Dover Corporation manufactures and sells a range of specialized products and components, and provides related consumables and services. The company operates in four segments: Communication Technologies, Energy, Engineered Systems, and Printing and Identification. The Communication Technologies segment engages in the design and manufacture of products and components in the consumer electronics, medical technology, aerospace/defense, and telecom/other markets. This segment offers micro-acoustic audio input and output components principally used in personal mobile handsets; advanced miniaturized receivers and electromechanical components for use in hearing aids; connectors for use in medical devices and bio processing applications; specialized components for use in implantable devices and medical equipment; precision engineered components and aftermarket parts; and frequency control components for wired and wireless network base station communications. The Energy segment provides engineered solutions for the extraction and handling of oil and gas in the drilling, production, and downstream markets. The Engineered Systems segment designs and manufactures pumps, compressors, and chemical proportioning and dispensing products. This segment also manufactures products and systems serving the refrigeration and food equipment, and other industrial markets. The Printing and Identification segment provides precision marking and coding, printing, dispensing, soldering and coating equipment, and related consumables and services to fast moving consumer goods and industrial markets. It offers marking and coding products used for printing variable information on food, beverage, consumer goods, and pharmaceutical products, as well as bar code and portable printers, and fluid dispensing related products. The company sells its products directly and through a network of distributors worldwide. Dover Corporation was founded in 1947 and is headquartered in Downers Grove, Illinois.