China imposed tariffs on Australian barley, citing anti-dumping claims. Additionally, it also suspended imports from several Australian abbatoirs. However, subsequent trade actions indicate this is unlikely a simple trade dispute, but more likely a political response.

Further reading:
  1. Everything you want to know about Australia-China trade war but were too afraid to ask
  2. Australia’s trade war with China is unwinnable for both countries
  3. Australia’s asymmetrical trade with China offers little room to move