Mr Trump said on Twitter on Wednesday that the delay is "a gesture of good will".
China said Thursday it was "making enquiries" about buying American farm products including big-ticket products like pork and soybeans, ahead of high-level trade talks in Washington next month.
AUD/USD has climbed almost 3% since bottoming earlier this month. Farming and energy sectors have been hit especially hard, and some economic forecasters have predicted that a recession is imminent.
Speaking at a weekly news briefing in Beijing on Thursday, Chinese Commerce Ministry spokesman Gao Feng said China welcomed the USA move.
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"I deal with them and I know them and I like them", he said.
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China unveils lists of USA products to be excluded from additional tariffs
The exemption will take effect on September 17 and be valid for a year through to September 16, 2020, it said . That will be applied to the products subject to additional tariffs on US$60 billion of American goods.
The talks are set to open next month in Washington.
The Chinese exemptions will become effective on September 17 and will be valid for a year, according to the Customs Tariff Commission of the State Council, which released two lists that include seafood products and anti-cancer drugs.
Both sides imposed fresh tit-for-tat tariffs on Sept 1.
China has imposed several rounds of duties on U.S. goods in retaliation against U.S. Section 301 tariffs, beginning previous year in July and August with a 25% levy on about $50 billion of U.S. imports.
Preliminary meetings are set to take place later this month in Washington before USA treasury secretary Steven Mnuchin and trade representative Robert Lighthizer meet China's vice premier Liu He in October.
"According to my understanding, Chinese firms have started to inquire about prices for USA agricultural goods".