Chinese imports of USA goods rose 11.1 percent to $13.3 billion.
The threat came after Trump said Friday he was considering extending penalties to an additional $267 billion of Chinese products in their battle over Beijing's technology policy.
Ford has rejected President Trump's call for it to shift production of the Chinese-made Focus Active crossover-style hatchback to the US, after announcing last month that it would not import the model due to tariff concerns.
Trump has criticized China's record trade surplus with the United States, and has demanded that Beijing cut it immediately.
Apple Inc said a "wide range" of its products including the Apple Watch would be affected by proposed USA tariffs on Chinese goods but gave no sign of an impact on its iPhone. "We hope, instead, that you will reconsider these measures and work to find other, more effective solutions that leave the USA economy and USA consumer stronger and healthier than ever before", Apple said. Apple added that computer parts for its US operations would be hit by the tariffs.
The U.S. has imposed US$50 billion worth of tariffs on Chinese goods with another US$200 billion in the final stages.
China matched Washington's first round of tariff hikes on $50 billion of its goods, but their lopsided trade balance means Beijing is running out of imports for retaliation.More news: Fresh Luke Shaw Injury Reportedly Not As Bad As First Appeared
"The burden of the proposed tariffs will fall much more heavily on the United States than on China", Apple said in its letter.
"Chinese trade data and a ballooning record surplus with the USA over the weekend won't have helped".
The automaker decided a couple years back to shift production of the Focus to Mexico, then last year it opted for China instead.
China's imports from the United States previous year totaled $153.9 billion.
The administration in July implemented a 27.5 percent tariff on cars imported from China, which the Asian nation countered with a 40 percent levy on USA automobile imports.
Chinese regulators have so far targeted farm goods and other exports from states that supported Trump in the 2016 election.
Fitness tracker maker Fitbit said increased tariffs would compromise its investments in USA -based innovation.
Chinese regulators have shown their willingness to attack foreign companies in disputes with other governments.