Trump declared victory on Sunday, writing: "This is just the beginning".
The tariffs, ranging from 5 percent to 25 percent, would apply to 5,207 products, and US actions will determine whether China adopts the additional duties, Beijing said at the time.
Ford on August 31 said it was dropping plans to ship the Focus Active from China to America, citing the Trump administration's new tariffs. The United States imported $3 of Chinese goods past year for every $1 of American goods bought by China.
The trade war has hurt US agriculture, prompting the administration to offer compensation to affected farmers, and promises to pinch a variety of American businesses - including companies that are based in the USA but do some production in China, such as Ford was planning to do. Kristin Dziczek of the Center for Automotive Research said that Ford can make Focuses "in many other plants around the world, so if they chose to continue to sell a Focus variant in the USA market, there are several options other than building it in the United States". "As a result, tariffs will ultimately reduce the economic benefit we generate for the United States", Apple said.
China matched Washington's first round of tariff hikes on $50bn of its goods, but their lopsided trade balance means Beijing is running out of imports for retaliation.
Even if Apple were to start making iPhones in the USA, it would take a while for the brand to set everything up.
Trump, speaking on Friday aboard Air Force One, said the administration had tariffs planned for an additional $267 billion worth of Chinese goods.
However, the company's letter adds that every product of theirs "contains parts or materials from the United States and is made with equipment from U.S. based suppliers".
Chinese trade data released on Saturday could give Trump more reason to turn up the heat. He then asked it to "start building new plants now".
Fiscal stimulus could increase to RMB 5 trillion in 2H18 with another RMB5 trillion in 1H19, particularly if this has to offset the negative impact from the full $200 billion in added tariffs should the U.S. carry out its threats in full, Pang said.
Mr Trump said: "I am being strong on China because I have to be".
Trump's understanding of and attitude toward trade policy is facing renewed scrutiny after two explosive publications detailed mounting strife between Trump and his closest aides.
Apple has created a US$5b fund to encourage innovation among its domestic suppliers, which are themselves getting caught in the trade crossfire.
There was some relief earlier Friday that Trump did not immediately impose levies on $200 billion of Chinese goods after the passing of a deadline for a public consultation.