Seoul's authorities found toxic substances way above the legal limit in Temu and AliExpress' children's products.NurPhoto/Getty ImagesChildren's clothes from Temu and AliExpress were found to contain toxic substances.South Korean authorities said a jacket from Temu contained 622 times the legal limit for such substances.The substances include phthalate plasticizers, lead, and cadmium, which are classified as hazardous in the country.Some children's clothes from Chinese fast fashion retailer Temu contained up to 622 times the legal limit for toxic substances, the Seoul Metropolitan Government said.The government tested 26 pieces of children's winter wear from Temu, AliExpress, and Shein and found that seven contained toxic substances like phthalate plasticizers, lead, and cadmium, per its news release on Friday.A children's jacket from Temu contained 622 times the legal limit for phthalate plasticizers, a chemical compound that makes plastics more flexible.According to the government's news release, the jacket was also found to contain lead at about 3.6 times the legal limit and cadmium at approximately 3.4 times the limit."Phthalate-based plasticizers affect reproductive functions such as sperm count reduction and can cause infertility and even premature birth," an official from Seoul's environmental health team told the AFP after an earlier investigation in August.Lead and cadmium are both hazardous carcinogenic materials, according to the US Department of Health and Human Services.A jumpsuit from Temu contained 294 times the legal amount of phthalate plasticizers, the report said.