A Chinese web security company attracts crowds with the Peking Opera costumes at the RSA conference in San Francisco on March 2, 2016. (People's Daily Online/Han Shasha)

San Francisco, Mar.4, --As a top security conference, the annual RSA is estimated to attract more than 30,000 attendees and over 550 companies specializing in information security to San Francisco from February 29 to March 4 2016.

More than 20 Chinese companies bring their products and services to the expo to connect with the trends and seek opportunities, making China the third largest origin of the attending companies following the United States and Germany, according to Zhongguancun Technology Park, organizer of the Chinese vendors at the expo. American companies take a dominant 76% percent of all the presenting firms, including Cisco, Dell, Semantic, Gartner, and FireEye, followed by 28 German companies.

Starting in 1991, RSA is widely considered an indicator of the security industry as experts, industry leaders and cyber security officials gathered and discussed new trend at the conference. The theme of this year is "Connect to protect".