Who owns Shangdong Airlines which operates mainly domestic trunk routes and whose focus city is Qingdao in Shandong Province, China?
Qingdao Liuting International Airport:  Qingdao is a focus city for China Eastern Airlines and Shandong Airlines. Shandong Airlines: Shandong Airlines Co.Ltd. Shandong Airlines:  It is owned by Air China and holds a 10 percent stake in Sichuan Airlines.
i don't know