Fast fashion giant Shein is coming under increasing scrutiny for lack of supply chain transparency. The Chinese company, thought to be valued at 15 billion dollars, is best known for selling ultra cheap fashion online outside out China. This week it was called out for falsely stating its factories were certified by the International Organisation for Standardisation (ISO) and labour standards organisation SA8000.

According to Reuters neither company issued certifications to Shein, which saw the elusive retailer swiftly remove their mentions from its social responsibility web page.