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 Liuting International Airport (IATA: TAO, ICAO: ZSQD) is the main airport serving the city of Qingdao in Shandong Province, China. 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