You will need to have products tested to determine whether they meet the standard. A signed Declaration of Conformity stating that the product complies with the Standard. It must be signed by an Australian citizen or resident who is in a position to represent the company. This is your legal statement that the product complies. The C-Tick mark is a trademark registered to the ACA by the Trademark Office and indicates compliance with the Standard.
Hefty penalties are in store for companies that choose to ignore compliance issues.