China Development Bank Corp., the state-owned lender charged with strengthening the country's competitiveness, is providing more than $1 billion to help smaller companies leave the U.S. stock market.

The nation's biggest policy lender has offered funding so Fushi Copperweld Inc., a Beijing-based wire maker listed on the Nasdaq Stock Market, can buy back its shares from the public, the company said last month. China TransInfo Technology Corp. said June 8 it would drop its U.S. listing with CDB financing. The bank has provided more funding than any other lender to help the nation's companies exit the world's biggest equity market, according to Roth Capital Partners, which specializes in emerging markets.

While more than 60 Chinese companies joined U.S. exchanges in the three years through 2011, only one listed this year after those with market capitalizations of less than $500 million lost 53 percent of their market value. The crash began in June 2011, when Muddy Waters LLC, a short-selling firm, raised concerns about accounting and corporate-governance standards at Chinese companies by accusing Sino-Forest Corp., a timber company that traded on the Toronto exchange, of exaggerating its assets.