Chinese firms are using North Korean prison labor to produce wigs and fake eyelashes for export, according to a new report, disguising the finished goods as “Made in China” to facilitate their sale around the world.

The investigation by the Seoul-based nongovernmental organization Citizens’ Alliance for North Korean Human Rights (NKHR) claims that the prisoners work up to 20 hours per day and that their output could end up on major ecommerce sites like Amazon, China’s Temu and South Korea’s Gmarket.