The China Securities Regulatory Commission has shared the audit details of four Chinese companies listed abroad with overseas regulators, in a further move to crack down on illegal activities and protect the interests of investors, the watchdog said on Friday.

In May, a memorandum of understanding was signed by the CSRC, China's Ministry of Finance, the audit regulator in the United States and the Public Company Accounting Oversight Board in the US.

Since March 2013, the CSRC has been making available to foreign counterparts the audit details on Chinese companies listed abroad and is also seeking cooperation projects with overseas regulators.