China has accused the United States of bullying and warned it would hit back after the Trump administration raised the stakes in their trade dispute, threatening 10 per cent tariffs on $US200 billion ($A270 billion) of Chinese goods.
China's commerce ministry said on Wednesday it was "shocked" and would complain to the World Trade Organisation, but did not immediately say how it would retaliate. In a statement, it called the US actions "completely unacceptable".
The foreign ministry described Washington's threats as "typical bullying" and said China needed to counter-attack to protect its interests.
"This is a fight between unilateralism and multilateralism, protectionism and free trade, might and rules," foreign ministry spokeswoman Hua Chunying told a regular briefing on Wednesday.
Beijing has said it would hit back against Washington's escalating tariff measures, including through "qualitative measures", a threat that US businesses in China fear could mean anything from stepped-up inspections to delays in investment approvals and even consumer boycotts.
The Wall Street Journal, citing unnamed Chinese officials, said Beijing was considering steps including holding up licences for US companies, delaying approvals of mergers involving US firms and stepping up border inspections of American goods.
China could also limit visits to the US by Chinese tourists, a business state media said is worth $US115 billion, or shed some of its US Treasury holdings, Iris Pang, Greater China economist at ING in Hong Kong, wrote in a note.
The $US200 billion far exceeds the total value of goods China imports from the US , which means Beijing may need to think of creative ways to respond to such measures.
On Tuesday, US officials issued a list of thousands of Chinese imports the Trump administration wants to hit with the new tariffs, including hundreds of food products as well as tobacco, chemicals, coal, steel and aluminium, prompting criticism from some US industry groups.
It also includes consumer goods ranging from car tyres, furniture, wood products, handbags and suitcases, to dog and cat food, baseball gloves, carpets, doors, bicycles, skis, golf bags, toilet paper and beauty products.
"For over a year, the Trump administration has patiently urged China to stop its unfair practices, open its market, and engage in true market competition," US Trade Representative Robert Lighthizer said in announcing the proposed tariffs.
"Rather than address our legitimate concerns, China has begun to retaliate against US products ... There is no justification for such action," he said in a statement.