Warren Buffett became a fan of Dayang suits when he visited China in 2007.

FORBES: Chinese Clothing Multimillionaire Puzzled By Outrage Over U.S. Olympic Uniforms

He filmed a promotional video for Li in 2009, which helped boost Dayang shares on Shanghai Stock Exchange.

FORBES: Chinese Clothing Multimillionaire Puzzled By Outrage Over U.S. Olympic Uniforms

According to a company filing with the Shanghai Stock Exchange in April 2012, Li owns 20.4% of Dayang Trands.

FORBES: Chinese Clothing Multimillionaire Puzzled By Outrage Over U.S. Olympic Uniforms

As founder and president of the Shanghai-listed Dayang Trands, Li made the Forbes list of 400 Richest Chinese in 2005.

FORBES: Chinese Clothing Multimillionaire Puzzled By Outrage Over U.S. Olympic Uniforms

Dayang Trands shares more than doubled in the two months after Warren Buffett appeared in a promotional video in 2009, praising the nine Trands suits he owns.

WSJ: The First-Lady Effect on China's Fashion Labels

Li Guilian runs Dayang Trands, a Chinese clothing company that is manufacturing the U.S. Olympic uniforms that the American team will be wearing at the opening ceremony in London on Friday.

FORBES: Chinese Clothing Multimillionaire Puzzled By Outrage Over U.S. Olympic Uniforms