Its search engine is already the default for 80 percent of Android phones in China. The company is now testing its own browser, and offers a beta version of its microblogging site as it pursues new opportunities in the country.

Baidu, which operates in a country with 457 million Internet users, reported on Thursday that net profits for the quarter ended March 31 were US$164 million, up by 123 percent from the same quarter last year. The company’s revenue for the quarter was $372 million, up 88 percent from the same period last year.

The company expects revenue in the second quarter to be in the range of $493 million to $504 million, a year-on-year increase of up to 72.4 percent.

Baidu currently has a 75.8 share of China's search engine market, according to Beijing-based research firm Analysys International. Google is a distant second with a 19.2 percent share.

The company expects further growth, as search is now the most used Internet service in China, CEO Robin Li said during a conference call on Thursday.