Also I advise to be careful with information of corporate websites such as from SINOPEC.

The page about Qilu (like about any other subsidiary or site) is not up-to-date and all information pages carry the date from 2016. As a matter of fact there are subsidiaries that are no longer existing with the reported name. I have aded some SInopec subsidiaries for which this is the case. In addition Sinopec Qilu does not appear in the last (2023) annual report in the list of wholly-owned and controlled subsidiaries on p. 74. It is probably a mixed ownership but not 100% owned by Sinopec.

Spotted the site by searching on Baidu Maps and added the exact location.