(Bloomberg) -- U.S. regulators added a broad range of Chinese companies, including JD.com Inc., Pinduoduo Inc. and Bilibili Inc., to a expanding watchlist of companies that face possible expulsion from American exchanges because of Beijing’s refusal to allow access to the businesses’ financial audits. The Securities and Exchange Commission on Wednesday said it added the companies to a provisional lineup of U.S.-listed Chinese firms that face delistings under a 2020 law, starting a three-year clock to comply with inspection requirements that cover all public companies in the country. Wall Street’s main watchdog has long been expected to crack down on...