China is reaching out to other nations as the US layers on more tariffs in what appears to be an attempt to form a united front to compel Washington to retreat.

Days into the effort, it's meeting only partial success with many countries unwilling to ally with the main target of President Donald Trump's trade war.

Facing the cratering of global markets, Trump on Wednesday backed off his tariffs on most nations for 90 days, saying countries were lining up to negotiate more favourable conditions.

China has refused to seek talks, saying it would “fight to the end” in a tariff war, prompting Trump to further jack up the tax rate on Chinese imports to 125 per cent. China has retaliated with tariffs on US goods of 84 per cent, which took effect Thursday.

China has thus far focused on Europe, with a phone call between Premier Li Qiang and European Commission President Ursula von der Leyen “sending a positive message to the outside world.”

That was followed by a video conference between Chinese Commerce Minister Wang Wentao and EU Commissioner for Trade and Economic Security Sefcovic on Tuesday to discuss the US “reciprocal tariffs.”

Wang has also spoken with the 10-member Association of Southeast Asian Nations, while Li, the premier, has met with business leaders. China has “already made a full evaluation and is prepared to deal with all kinds of uncertainties, and will introduce incremental policies according to the needs of the situation,” Xinhua quoted Li as saying.

Despite their unhappiness with Washington, not all countries are interested in linking up with China, especially those with a history of disputes with Beijing.

“We speak for ourselves, and Australia's position is that free and fair trade is a good thing," Australian Prime Minister Anthony Albanese told reporters. “We engage with all countries, but we stand up for Australia's national interest and we stand on our own two feet.”

India has also reportedly turned down a Chinese call for cooperation, and Russia, typically seen as China's closest geopolitical partner, has been left out of the Trump tariffs altogether. Taiwanese Foreign Minister Lin Chia-lung said on Wednesday that his government is preparing for talks on tariffs with the US.