Karry Wang Junkai, a popular Chinese pop star and Intel brand ambassador, terminated his partnership with the chip maker on Monday night over the statements, according to a post on his official Weibo account.
The move comes amid intense concerns about human rights abuses against the Uyghur, a Turkic Muslim minority ethnic group, in China's Xinjiang region.
Tactics included hanging detainees from the ceiling, electrocutions, waterboarding, sleep deprivation, starvation, and sexual abuse, he said.
China is accused of locking up at least a million Uyghurs and forcing some to work for little to no pay.
The US warned of added legal risks for American companies with ties to Xinjiang, citing genocide and human rights abuses in the region.
"The Chinese government use Uyghurs as test subjects for various experiments just like rats are used in laboratories," a software engineer said.
The fast-fashion retailer denies the shirts were made in the contested Uighur region.
A new report from Human Rights Watch called on the United Nations and foreign governments to punish Chinese officials taking part in state repression.
Reports have connected forced labor by detained Uyghur Muslims to major global companies that do business in the Xinjiang region.
The last time the US boycotted the Olympics was during the 1980 summer games in Moscow, and it could happen again in Beijing next year.
Multiple reports say Beijing is forcing Uyghur Muslims to work in Xinjiang fabric factories, prompting the US to ban imports of cotton from the region.
"The Wings of Songs" premiered in China on March 28 and is about a Uyghur, a Kazakh, and a Han Chinese man forming a musical group.
The ads on Facebook claim that life in the region of Xinjiang is happy. Multiple reports have detailed human-rights abuses against Uyghur Muslims.
The BBC said it relocated China correspondent John Sudworth to Taiwan. He had reported on the coronavirus and treatment of Uyghur Muslims.
Major Chinese e-commerce platforms boycotted H&M after a social media firestorm over the brand's stand on Xinjiang human rights violations.
Two Chinese foreign ministry officials suggested that the US should not criticize Beijing's rights abuses while failing to address its own.
A Chinese report obtained by the BBC shows Uighurs were given job-transfer schemes to "meld" them into mainstream society.
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