China is threatening to punish foreign companies in an apparent retaliation for the Trump administration's blacklisting of Huawei.

China's Ministry of Commerce is preparing an "unreliable entities list," which will crack down on foreign companies that break the rules, it announced Friday. No specific companies were named, but the list will target firms that block or deny supplies to Chinese industries.

That may be bad news for US tech suppliers in China. Companies including Qualcomm, Intel, and Microsoft—which have a major presence in the country—have all been forced to suspend business with Huawei following the Trump administration's blacklisting of the Chinese vendor from the US supply chain. As a result, Huawei is losing access to key components and software needed to produce its Android smartphones and Windows laptops.

For now, China's Ministry of Commerce is declining to offer details about the "unreliable entities list," including how offenders will be punished. During a Friday press conference, a ministry spokesman simply said the government plans on releasing the exact measures in the "near term."

The country's online censorship apparatus already bans internet access to major US sites, such as Google, Facebook, and Twitter. However, many prominent US tech companies—like Apple, HP, and Dell—operate in China employ many local Chinese workers

In the meantime, Huawei is considering using its homegrown technology to replace the components it's lost from the Trump administration ban. The company has been telling the media a Huawei-created OS could launch as soon as this fall after Google was forced to suspend new Android licensing to the Chinese vendor's future smartphones.