An introduction will only be permitted in exceptional circumstances if there has been a marketing of the securities in Hong Kong within the 6 months prior to the proposed introduction where such marketing was made conditional on listing being granted for those securities. Furthermore, there may be other factors, such as a pre-existing intention to dispose of securities, a likelihood of significant public demand for the securities or an intended change of the issuer's circumstances, which would render an introduction unacceptable to the Exchange. An introduction will not be permitted if a change in the nature of the business is in contemplation.