Holista CollTech joins forces with GICC to develop works first nasal sanitiser, page-1803

"Claims that a disinfectant has an effect against any virus must be expressly permitted by the TGA before being used in consumer advertising (including on the label)." -
TGA website

The link above will also provide you a list of companies & products that have been entered into the ARTG with specific claims against SARS-Cov-2 (COVID 19) or COVID-19 on the product label.

I could be wrong and maybe someone else can confirm, but I believe TGA approvals/permission is what HCT are waiting on. It's my understanding this is why HCT is not able to advertise/make a specific announcement here in Australia at this time.