Express bus to/from Changshui Airport for 25 yuan
About 65 minutes drive to airport
This does not stop at the Jinanya hotel at Da Shang Hui as the flyers state (and is on the images tab here). They need to have another stop in the same area or else they are missing out on covering a big chunk of the city.
You can take another bus, the 919C, I believe, if you are nearby Da Shang Hui, which leaves from the bus station on HeHong Lu, nearby the Qianxing road intersection. This bus goes every hour and is white, found at the western end of the station. It is operated by a different company and takes about 1 hour 10 minutes to get to the airport due to a large number of stops especially near the airport.
Great bus though if you can catch it!