Ann: Half Year Results Presentation, page-22

IMO, ZNO has dropped over 95% today (from its peak on July 2020) is mainly because the market is still taking it as a pandemic stock.

I don't, though ZNO is still benefiting from the pandemic that hygiene will still be a priority in many industries like transport (eg. trains, buses, airplanes), hotels, buildings (Zoonex) etc. Just look at the research results on what many people concern most when going back to offices - hygiene on public transport and office buildings.
This post from @@noeinstein is just an example https://hotcopper.com.au/posts/60209411/single

I see animal health (in particular poultry and piggery) as a growing business to significantly contribute to the revenue in the coming months and years.