The YKK Group is a Japanese group of manufacturing companies that produces fasteners and architectural products at 109 YKK companies in 71 countries around the world.
As the world's largest zipper/zip manufacturer, YKK Group is most famous for making zippers; however, it also manufactures other fastening products, architectural products and industrial machinery.
On September 19, 2007 YKK was fined 150.3 million euros by the European Commission for running worldwide price-fixing cartels and sharing markets with zip-makers Prym and Coats.
Coats of Britain and Prym of Germany were fined 122.4 million and 40.5 million euros respectively for their participation in cartel behaviour. YKK lost their appeal to the General Court on June 27, 2012. It then launched an appeal to the European Court of Justice on September 5, 2012, which was partly successful.