BEIJING, March 4 (Reuters) - China's top trade negotiator Li Chenggang has met with the executive vice president of U.S. pharmaceutical company Johnson & Johnson JNJ.N, the country's commerce ministry said on Wednesday.

The meeting took place just as China and the United States were reportedly preparing for another round of trade talks next week ahead of an expected summit between the presidents of both countries.

(Reporting by Liz Lee and Beijing newsroom; Editing by Jamie Freed)

((liz.lee@thomsonreuters.com;))