NANCHANG, China (AP) In a lively Muslim quarter of Nanchang city, a sprawling Chinese factory turns out computer screens, cameras and fingerprint scanners for a supplier to international tech giants such as Apple and Lenovo. Throughout the neighborhood, women in headscarves stroll through the streets, and Arabic signs advertise halal supermarkets and noodle shops.

Yet the mostly Muslim ethnic Uighurs who labor in the factory are isolated within a walled compound that is fortified with security cameras and guards at the entrance. Their forays out are limited to rare chaperoned trips, they are not allowed to worship or cover their heads, and they must attend special classes in the evenings, according to former and current workers and shopkeepers in the area.

The connection between OFILM, the supplier that owns the Nanchang factory, and the tech giants is the latest sign that companies outside China are benefiting from coercive labor practices imposed on the Uighurs, a Turkic ethnic group, and other minorities.

Over the past four years, the Chinese government has detained more than a million people from the far west Xinjiang region, most of them Uighurs, in internment camps and prisons where they go through forced ideological and behavioral re-education . China has long suspected the Uighurs of harboring separatist tendencies because of their distinct culture, language and religion.

When detainees graduate from the camps, documents show, many are sent to work in factories. A dozen Uighurs and Kazakhs told the AP they knew people who were sent by the state to work in factories in Chinas east, known as inner China some from the camps, some plucked from their families, some from vocational schools. Most were sent by force, although in a few cases it wasnt clear if they consented.

Workers are often enrolled in classes where state-sponsored teachers give lessons in Mandarin, Chinas dominant language, or politics and ethnic unity. Conditions in the jobs vary in terms of pay and restrictions.

At the OFILM factory, Uighurs are paid the same as other workers but otherwise treated differently, according to residents of the neighborhood. They are not allowed to leave or pray unlike the Hui Muslim migrants also working there, who are considered less of a threat by the Chinese government.

They dont let them worship inside, said a Hui Muslim woman who worked in the factory for several weeks alongside the Uighurs. They dont let them come out.

If youre Uighur, youre only allowed outside twice a month, a small business owner who spoke with the workers confirmed. The AP is not disclosing the names of those interviewed near the factory out of concern for possible retribution. The government chose them to come to OFILM, they didnt choose it.