The Airbus assembly line in northern China's Tianjin filished building its 100th A320 today.The plane will delivered to AirChina.This assembly line mainly produces A319 and A320 Airbus models.It can now make three aircraft a month for local and overseas airlines.The four-year-old plant is the third for airbus,and its first outside Europe.The other two are in Toulouse France and Hamburg Germany.