Changan Automobile (Group) Co Ltd is an automobile manufacturer headquartered in Chongqing, China, and a state-owned enterprise. Its production is primarily composed of no-frills passenger cars and microvans, small trucks and vans for commercial use.Considered to be one of the "Big Four" Chinese automakers, manufacture of 1.9 million units in 2012 saw the company rank fourth among China's largest automakers by production volume. The company is also known as Chana.