By Foo Yun Chee BRUSSELS (Reuters) -EU antitrust regulators, which raided some fashion companies last month, are focusing on a group of designers who two years ago called for changes in sales periods and discounts, people familiar with the matter said. The European Commission, which did not name the companies nor the countries in which it conducted the dawn raids, said the firms may have violated EU cartel rules against restrictive business practices, which include price-fixing. The EU competition watchdog is looking into some signatories of an open letter issued in 2020 which called for funda…
