US President Donald Trump’s tariffs on aluminum and steel are motivated mostly by concerns that China is flooding the global market and harming US manufacturing, said a former trade adviser to the White House.

Existing American tariffs already restrict steel and aluminum shipments from China, which is now flooding other markets with its exports instead.

Matt Ronge, the cofounder and CEO of AstroPad, is also contemplating price hikes. AstroPad makes a range of gadgets for creative workers, including a wireless dongle that turns spare iPads or Macs into secondary computer displays and a combination Apple Pencil tip and iPad screen cover that feel more like writing on paper.

President Donald Trump's recent tariff threats may be bolstering China's appeal within the apparel sourcing arena.

The White House published three separate Executive Orders that imposed blanket tariffs on Canadian, Mexican and Chinese imports. The Executive Orders are all similar in scope, with each having a unique justification for imposing the associated tariffs.

The Trump administration told Mexican officials that they should put their own duties on Chinese imports as part of their efforts to avoid tariffs threatened by President Donald Trump, according to people familiar with the matter.

In a drab office in China's industrial heartland, Andy Xiao frets over the future of his shoe materials business, now straining under sweeping tariffs imposed by Donald Trump.