China warned the US that a law banning imports from Xinjiang unless companies prove they’re free of forced labor would “severely” damage ties, escalating a dispute between the nations over human rights.

“If the act is implemented, it will severely disrupt normal cooperation between China and the US, and world industry and production chains,” Foreign Ministry spokesman Zhao Lijian said Thursday.

Zhao urged the US not to implement the Uyghur Forced Labor Prevention Act and otherwise trying to “hobble China’s development.

He added that “if the US insists on doing so, China will take robust measures to uphold its own rights and interests as well as its dignity.”

The comments set up a showdown between the world’s two-largest economies because the law is set to take effect on June 21.

Customs and Border Protection warned companies Wednesday that the bar for approving goods will be "extremely high" under the Biden administration.

Under the statute, the US assumes that anything made in western Xinjiang is made with forced labour and can't be imported until corporations present "clear and persuasive evidence" otherwise.

The December law strengthens US efforts to resist China's alleged mistreatment of Uyghurs and other minorities in Xinjiang. Beijing has dismissed claims that minorities are forced to work.