The first derivative of the A320 was the Airbus A321, also known as the Stretched A320, A320-500 and A325. 2. In 2007, Airbus introduced a new enhanced, quieter cabin with better luggage storage and a more modern look and feel, and a new galley reduces weight, increases revenue space and improves ergonomics and design for food hygiene and recycling. 3. The A318 was born out of mid-1990 studies between Aviation Industries of China (AVIC), Singapore Technologies Aerospace, Alenia and Airbus on a 95- to 125-seat aircraft project. 4. The UK, France and West Germany wanted the responsibility of final assembly and the associated duties, known as "work-share arguments". 5. The A320neo (neo for new engine option) is a development launched on 1 December 2010, it made its first flight on 25 September 2014 and it was introduced by Lufthansa on 25 January 2016. 6. During the A320 development programme, Airbus considered propfan technology, backed by Lufthansa. 7. In February 1981, the project was re-designated A320, with efforts focused on the former SA2. 8. In 2006, Airbus started the A320 Enhanced (A320E) programme as a series of improvements targeting a 4–5% efficiency gain with large winglets (2%), aerodynamic refinements (1%), weight savings and a new aircraft cabin. 9. The A319 is the next derivative of the baseline A320. The design is a "shrink" with its origins in the 130- to 140-seat SA1, part of the Single-Aisle studies. 10. The Toulouse Blagnac final assembly line builds A320s, whereas the Hamburg Finkenwerder final assembly line builds A318s, A319s, and A321s.