delivery at this site, which is served by Conrail on the Philadelphia Belt Line, allowing delivery of new cars by rail. The London Underground 1995 and 1996 Stock fleets have aluminium bodies built by Alstom in Barcelona with assembly completed at the Metro-Cammell works in Washwood Heath, Birmingham. British Rail Class 385 fleets have aluminium bodies built by Hitachi in Kasado, Japan, with assembly completed at the Newton Aycliffe works in Country Durham. Aircraft Unserviceable military aircraft are also sold as "knock-downs" after they have ended their service life, packaging them with serviceable aircraft. This allows them to be used for cannibalization of spare parts. The European aircraft manufacturer Airbus uses knock-down kits to assemble A320 family aircraft outside Europe. The Airbus A320 final assembly line in Tianjin, China assembles fuselage, wing, and tail sections made in Europe with avionics and engines made in the EU or the United States and locally sourced components for interiors. Airbus has opened a similar A320 final assembly line in the United States in September 2015, located in Mobile, Alabama; again using European-made fuselages, wings, and tail sections. However, the Mobile final assembly line will use more locally sourced components than the Tianjin line; engines, interior components, and avionics will be sourced mainly from American suppliers. Both the Airbus Tianjin and Mobile plants receive their fuselages, wings, and tail sections from Europe via ocean freight using specially designed ships, as the plants are located in port cities. Housing A 1908 advertisement in Popular Mechanics attests that knock-down kits for houses were on the market by the early 20th century, if not before. Furniture See also Rules of origin References Automotive technologies Manufacturing International trade pl:Systemy montażu samochodów#CKD