But the tariffs do not appear to have dented the appetite for Chinese-made products in the United States. Make your products in the United States instead of China.
The fresh tariff threat would be in addition to the $200 billion in tariffs on Chinese goods the Trump administration is considering, which Trump said "will take place place very soon depending on what happens".
The United States imported $505 billion in goods from China past year, and 2018 Chinese imports through July were up almost 9 percent over the same period of 2017, according to U.S. Census Bureau data.
"The burden of the proposed tariffs will fall much more heavily on the United States than on China", Apple said in its letter.
Donald Trump: U.S. could move "very soon" to hit China with $200B in new tariffs
The figures were well below July's performance, when exports had jumped 12.2 percent and imports grew 27 percent.
Trump has recently responded in a tweet where he said that the tariffs could raise the price of Apple products but also gave a "simple solution" that would result in no tax at all.
The president, speaking to reporters en route to Fargo, North Dakota, said he was ready to roll out even more tariffs on short notice, if he wants.
The trade war the president has initiated between the world's two largest economies stems from concerns that China has deployed predatory tactics - including cyber-theft - to try to supplant America's technological supremacy. China has warned that it would retaliate with import taxes on $60 billion worth of USA goods.More news: More than 1 million to flee as Florence rips toward East Coast
Trump has already imposed 25 percent tariffs on $50 billion worth of Chinese goods, mostly industrial machinery and intermediate electronics parts, including semiconductors.
Those potential tariffs would come on top of tariffs Trump has said he's poised to slap on $200 billion worth of goods from China - everything from handbags to bicycle tires.
White House economic adviser Larry Kudlow warned earlier on Friday that China may find themselves more isolated if trade talks with the United States fall apart.
The last effort at a negotiated solution came in late August with meetings between low-level officials, but nothing came of it.More news: Manchester United Eye £107m Juventus Star
The four companies Hewlett Packard Enterprise, Juniper Networks, Cisco and Dell are concerned that the new tariffs would increase the costs of the networking equipment they have and damage the bottom lines of the companies and leading to possible job losses in the U.S.
"To a certain extent, it's going to be up to China", the president said Friday.More news: Russian Federation launches largest military drill since Cold War