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. Qingdao Liuting International Airport:  Qingdao is a focus city for China Eastern Airlines and Shandong Airlines.
i don't know