The National Farmers Federation says China's suspension of beef imports from a sixth supplier in Australia is a "distressing" and "concerning" development.
China has not confirmed why it took the latest decision to suspend beef imports from Australia's Meramist Pty Ltd.
But the decision adds to imports from five other Australian beef suppliers already banned this year, citing reasons that have included issues with labelling and health certificates.
The suspensions have come as Australia's ties with the top trade partner have significantly deteriorated following Canberra's calls for an inquiry into the origins of the coronavirus.
National Farmers Federation (NFF) CEO Tony Mahar said the federal government must continue to work towards resolving the trade disputes.
"It is distressing and concerning - but what we want the government to do is keep working through these challenges and keep working through a solution for farmers," he told reporters.
"Keep trying, keep talking, keep looking for opportunities to address these issues one by one and don’t give up - it’s too important for Australian farmers."
China stopped receiving applications and registration for beef exports from the Meramist plant from December 7, China's General Administration of Customs said in a notice on its website, without giving a reason.
The company could not immediately be reached for comment.
In May, China banned imports from four of Australia's largest meat processors citing issues with labelling and health certificates. In August, it suspended imports from a fifth plant.
The relationship has faced months of clashes over trade, from barley to wine exports, and also increasingly aggressive rhetoric against Australia from the Chinese government.
During this time, senior government ministers have been unable to contact their Chinese counterparts despite repeated attempts.
Nationals Senator Matt Canavan said the recent actions of the Chinese government have been concerning.
"The Chinese government have made a number of threats to us and they are unacceptable," he told SBS News.
"The prime minister and the government have been very firm to say we will not back down to such threats ... we will stand up for our own nation's interests."
