“Our Open Power partners in China are getting access to the same technology that we make available to all Open Power members around the world,” Edward Barbini, a spokesman, wrote in an email. “We’ve been very transparent with all our stakeholders on this strategy, including the Obama administration, about our plans to expand both the Open Power community and IBM’s technology partnerships around the world.”

In a recent interview posted on Teamsun’s website, Huang Hua, a vice president, said the company’s new capabilities would help it better address security concerns of local Chinese companies. Calling a movement in China to replace crucial high-end technology from IBM, Oracle and EMC an “opportunity,” Mr. Huang said Teamsun’s strategy to “absorb and then innovate” would enable it to eliminate the capability gap between Chinese and American companies and create products that could replace those sold by companies in the United States.

Language about replacing IBM, Oracle and EMC was removed from the site after Teamsun and IBM were contacted for this article. Teamsun declined to be interviewed about the IBM project, and an assistant declined to make Mr. Shen available for comment.

IBM declined to comment on Mr. Shen because he is not an IBM employee. A spokesman with the United States Trade Representative declined to comment on IBM’s strategy in China.

IBM has many business projects in China. The company has also agreed to license the advanced chip technology that works as the brain of the servers to a separate Chinese company, Suzhou PowerCore. And IBM says it has spoken to clients about letting them build local encryption over its z13 mainframe computer, which could help in China, where a proposed antiterror law requires domestic companies to provide encryption keys or use local Chinese encryption standards.

IBM’s cooperation with Teamsun and Suzhou PowerCore through Open Power is part of the company’s strategic shift away from its traditional hardware, software and services businesses to new cloud, data and mobile offerings. IBM, which reports quarterly earnings on Monday, has been grappling with declining revenue as it makes that transition.

Both the server and chip technology IBM is licensing in China are widely used by banks in the country. In the fourth quarter, IBM generated $4.9 billion in revenue, or 20 percent of the total, from Asia; it does not break out China sales.