Some Chinese companies are stepping forward as the official backlash against American technology grows. Alibaba Group, one of China’s biggest technology firms, announced Wednesday that it hoped its cloud computing products would replace storage services that big American companies had sold to Chinese financial institutions.

A Chinese state-owned company, Inspur Group, announced Wednesday on a social networking platform that it planned to “completely take over” IBM’s main server business in China, and that it had begun a program called “I2I” or “IBM to Inspur” — part of an “irreversible trend of localization.” Inspur also said that it was open to employing any IBM workers and “transferring projects” from rivals, and that it had already hired 80 employees of “a multinational company.” An Inspur employee said that company was IBM.

Inspur, known in Chinese as Langchao, or Wave, has long been trying to usurp IBM as the dominant player in the server market here. IBM servers are used in state-owned banks. But in March 2013, a nationwide financial institution, Postal Savings Bank of China, began a pilot project to use Inspur servers, according to state news reports at the time. Several provincial banks did the same.

Central government agencies, including the People’s Bank of China and the Finance Ministry, are reviewing the use of IBM servers and considering whether to expand the use of Chinese-made servers, Bloomberg News reported last week.

A spokesman for IBM said the company was not aware of any Chinese government policy recommending that the banking industry not use IBM servers.

Analysts say China’s drive to promote domestic technology companies over foreign rivals is decades old, but competition with American interests became acute after the House Intelligence Committee said in October 2012 that two of China’s largest telecommunications businesses, Huawei Technologies and ZTE Inc., were a national security threat. The companies denied the charges, but the bipartisan report dealt a severe blow to their efforts to win contracts and sell equipment in the United States. (In the China router market, Huawei is the main challenger to Cisco.)

Shortly afterward, Chinese officials had serious discussions over establishing a security review process for foreign technology. That was a precursor to the security review procedures announced on May 22.