BEIJING, July 28 (Xinhua) -- China's top securities regulator has amended rules on removing companies from domestic stock exchanges, specifying that companies involved in major breaches of the law that threaten public health or security will face compulsory delisting.

Under the new rules, stock exchanges will suspend or delist companies that engage in a variety of unlawful activities including those harming national security, public safety or public health, China Securities Regulatory Commission (CSRC) said.

The revision tightens delisting rules made in 2014.

Stock exchanges will be responsible for detailing delisting rules, the CSRC said in a statement late Friday.