Changjiang Securities said it has delivered a proposal to take over the listing of a Sinopec unit, adding that it has the support of the China Securities Regulatory Commission. Changjiang Securities said Sinopec will decide which unit's listing can be used for the exercise.

Three Sinopec units said their shares have been suspended from Wednesday to Friday pending announcements. The companies are Sinopec Shandong Taishan Petroleum Co Ltd, Sinopec Wuhan Petroleum Group Co Ltd and Shijiazhuang Refining-Chemical.

Changjiang Securities, based in Wuhan in Hubei Province, failed to carry out a backdoor listing via Wuhan East Lake High Technology Group Co Ltd earlier this year.

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