US President Donald Trump's trade war against China has moved up a gear as it brings in a 25% tax on a second wave of goods worth $16bn (£12.4bn).
The move ratchets up the dispute which began in July. The US imports far more goods from China than it exports to it.
There are fears that more tariffs could cause further damage to companies and consumers. Goods affected this time include motorcycles and aerials.
China immediately imposed retaliatory taxes on the same value of US products.
Why did this start?
President Trump has been sounding off about unfair trade since even before he became president.
During the 2016 election campaign, he said China engaged in the "rape" of the American economy.
He ordered an investigation into Chinese trade policies in August 2017 and has been steadily imposing tariffs on Chinese goods since January this year.
His assertion is that China - and other countries - are taking advantage of US companies by selling their goods too cheaply.
In China, low production costs and a weak currency keep prices competitive. As a result, US imports from China far exceed the amount of goods going in the other direction.
President Trump thinks that by slapping on an extra tax - or tariff - he will make life easier for US companies, whose goods will become cheaper within the US by comparison.
As well as China, Mr Trump's "America First" policies have seen taxes imposed on Mexico, Canada and the European Union, to encourage consumers to buy American products. All of those countries have retaliated.
What goods are involved?
The US has applied new tariffs to a vast range of goods in 279 product categories, including children's cots and bedding, animal medicines, semiconductors, plastics, chemicals and railway equipment, shrimps and shrimp products, handbags and fridges.
China's list of 333 US product categories includes coal, copper scrap, fuel, buses and medical equipment.
Previous items affected included steel, soya beans, fruit, wine, whiskey, the famous Harley Davidson motor bikes and pig products.
What effect are his actions having in the US?
Although Mr Trump states his moves are aimed at protecting US industry and business, dozens of US companies and industry groups have testified to the US Trade Representative's Office that their businesses are being harmed.
Major carmakers recently warned that changes to trade policies were hurting performance.
Demand for their goods in China has fallen as US products are made more expensive by the addition of tariffs - after all, that is tariffs are designed to do.
And there are even warnings that the tariff on children's cots could be harmful to health. "Increasing tariffs on juvenile bedding products would directly promote an increased risk to child safety," claims Sam Shamie, of the Delta Enterprise Corporation.
Kenneth O'Brien of Gemini Shippers Group is particularly vocal in his opposition to tariffs on Chinese imports, which he says "will lead to the destruction of American jobs and the potential bankruptcy of US small businesses".
And as well as making Chinese goods more expensive for US consumers, the price of some US goods may rise, too.
Many of the businesses whose products have had retaliation tariffs applied warn they would not be able to absorb another tax without raising prices for US consumers.
Some businesses welcome the move, though.
The Southern Shrimp Alliance is glad not to have to compete with Chinese shrimp products. It also says these are a health risk to the American public, so there's an additional benefit to the tariffs here.