President Donald J. Trump moved ahead today with his threat to impose a 25 percent tariff on $50 billion worth of goods imported from China, which include medical imaging equipment and parts and other forms of health technology.

The Office of the United States Trade Representative (USTR) released a list of 1,102 tariff lines, 818 of which pertain to approximately $34 billion worth of products that will be subject to the tax starting July 6, and include X-ray, CT and MR parts and equipment among other materials. The remaining 284 lines cover $16 billion worth of items that will be further reviewed in a public notice and comment process, including a public hearing.

“We must take strong defensive actions to protect America’s leadership in technology and innovation against the unprecedented threat posed by China’s theft of our intellectual property, the forced transfer of American technology, and its cyberattacks on our computer networks,” Ambassador Robert Lighthizer said in a statement. “China’s government is aggressively working to undermine America’s high-tech industries and our economic leadership through unfair trade practices and industrial policies like ‘Made in China 2025’.”

Items subject to the tariffs include: electromagnets used for MR; computed tomography apparatus based on the use of X-rays; apparatuses based on the use of X-rays for medical, surgical or veterinary uses (other than computed tomography apparatuses); X-ray tubes; radiation generator units; radiation beam delivery units; apparatuses based on the use of alpha, beta or gamma radiations for medical, surgical, dental or veterinary use; parts and accessories of X-ray tubes; parts and accessories of apparatuses based on the use of X-rays; parts and accessories of apparatuses based on the use of alpha, beta or gamma radiations; and pacemakers for stimulating heart muscles, excluding parts and accessories thereof.

In response, China says it will impose its own tariffs, with the first wave set to impact $34 billion in agricultural, automobile and seafood products, starting July 6, the same day as the Drumpf tariffs. The date for the second wave is unknown but will impact 114 items within the chemical, medical equipment and energy industries, according to CNN Money.

"The United States has kept changing its mind and now launched a trade war ... We will immediately launch tariff measures that will match the scale and intensity of those launched by the United States," China's Commerce Ministry said in a statement.

The green light for the tariffs follows months of tension between the U.S. and China with Trump initially threatening to levy taxes on more than 1,300 Chinese products to dissuade American companies from transferring technology and intellectual property to domestic Chinese enterprises.

Implementation of the 25 percent tax falls under Section 301 of the Trade Act of 1974, which gives the president the right to take action, including retaliation, against foreign governments that violate international trade agreements or who are considered to exhibit actions that threaten U.S. commerce.

Testifying last month before the Section 301 committee, NEMA representatives urged Trump and the USTR to reconsider implementing tariffs, saying that such an action would lead to an unfair playing field among manufactures and risk a retaliation by China that could materially disadvantage many in the Chinese and global markets.

"U.S. electrical and medical imaging manufacturers support an approach that results in fair and open global markets through the application of clear, binding, and enforceable trade rules and compliance with international norms of intellectual property protection," NEMA told HCB News. "We urge the administration to consider and pursue alternative measures to bring about the necessary changes in Beijing that result in free and fair trade in our global marketplace."

For the complete list of U.S. tariffs, please click here.

HCB News will continue to monitor this story and provide relevant updates as they occur.