The United States (US) has imposed export restrictions on Semiconductor Manufacturing International Corp, taking aim at another prominent Chinese technology company and adding to tensions between the two countries over the critical industry.

US firms must now apply for a license to export certain products to Chinas largest chipmaker, the Commerce Department said in letter dated Sept. 25, reviewed by Bloomberg News . SMIC and its subsidiaries present an unacceptable risk of diversion to a military end use, the departments Bureau of Industry and Security wrote.

SMIC has not been put on the so-called US entity list, which means the restrictions are not yet as severe as those imposed on Chinas Huawei Technologies Co. The US has reportedly said it was mulling the more severe blacklisting, which would affect exports from a broader set of companies.

The military end-use rules only apply to a subset of listed US origin items. The Entity List rules apply to all US origin and some foreign-origin items, said Kevin Wolf, an export-control lawyer at Akin Gump and senior Commerce Department official in the Obama administration.

Compromise

The SMIC decision was a compromise between the Department of Defence and Commerce and moderates in the Trump administration, according to one person familiar with the negotiations.

SMIC has not received an official notice of the sanctions, has no relationship with the Chinese armed forces and does not manufacture goods for any military end-users or uses, the Shanghai-based company said in an emailed statement.

The Commerce Department wouldn’t immediately confirm the contents of the letter. The Financial Times reported on the letter earlier.

Still, restrictions against SMIC mark further escalation in the rising tensions between the worlds two most powerful countries. The US and China have clashed over trade, intellectual property, the coronavirus pandemic and national security, including an onerous new security law in Hong Kong.

The field of technology has become increasingly contentious as China takes aim at leading the world in certain sectors long dominated by the US The Trump administration blacklisted Huawei, preventing the giant telecommunications provider from buying components from American suppliers and pressured allies to follow suit. Then President Donald Trump threatened to ban the video app TikTok from Chinas ByteDance Ltd. if the service wasn’t sold to American owners.

As much as 50 per cent of SMICs equipment comes from the US, Jefferies estimated, and the company has a market value of more than $29 billion. SMICs customers include US chipmakers Qualcomm Inc and Broadcom Inc, according to Bloomberg data. The Chinese company’s shares slumped 23 per cent in one day earlier this month following a report that the US was mulling adding the firm to the blacklist.

Should the US export ban on SMIC materialize, it will signal an escalated attack by the US on China’s semi industry and more Chinese companies will likely be included, Jefferies analysts led by Edison Lee said.

After reports of the blacklist threat against SMIC earlier this month, Chinese Foreign Ministry spokesman Zhao Lijian accused the US of blatant bullying.

What it has done has violated international trade rules, undermined global industrial supply and value chains and will inevitably hurt US national interests and its own image, Zhao told a news briefing in Beijing.