Boutique investment bank China Renaissance Holdings Ltd has been unable to contact its Chairman and Chief Executive Bao Fan, the company said in a stock exchange filing. "The board is not aware of any information that indicates that Mr. Bao's unavailability is or might be related to the business and or operations of the Group which is continuing normally," the Hong Kong listed company said. Bao is a well-known dealmaker in China who has carved out a career working on high-profile tech transactions. He started China Renaissance in 2005. Bao is also China Renaissance's controlling shareholder, according to the exchange...