China's stocks closed higher on Wednesday with the benchmark Shanghai Composite Index up 0.91 percent to close at 2,549.18.
The Ministry of Railways was given a credit rating of AAA by a major Chinese rating agency, higher than China's Sovereign Credit Rating.
Commodities plunged to their lowest level in eight months on Tuesday, extending two weeks of losses. The retreat came on concern that the global share-market rout will slow the economy and erode demand. Gold jumped to a record on demand for a haven.
Chinese equities shrugged off the downward pressure of steep drops in the US and European stock markets, triggered by rating agency Standard & Poor's move to downgrade the long-term credit rating of the United States, and erased intraday losses to close flat on Tuesday.
Xi Shijia, 28, an IT clerk at a State-owned company in Beijing, said he will not stop buying individual wealth management (IWM) products from commercial banks in the second half to safeguard against asset losses.
China Merchants Bank, the country's fifth largest bank by market value, said on Tuesday that its first-half profits increased 40.12 percent year-on-year to 18.5 billion yuan ($2.87 billion).
Investors remained on edge amid rising fears of a possible global recession.
Fears about a possible global economic slowdown prompted investors to continue to flee stocks.
Chinese air-compressor maker Zhejiang Kaishan Compressor Co Ltd is set to raise up to 2.27 billion yuan ($353 million) from an initial public offering on the ChiNext market in Shenzhen.
China steel futures fell more than 4 percent on Tuesday .
China's central bank will drain 83 billion yuan ($12.9 billion) from the money markets through 28-day bond repurchase agreements on Tuesday.
China's stock market continued to tumble Tuesday by opening 2.33 percent lower amid growing market fears of a double-dip recession after US credit rating downgrade.