C ai Hongbin is a Chinese billionaire investor whose wealth is primarily derived from his substantial early investment in the CATL (Contemporary Amperex Technology Co. Limited), the world's largest manufacturer of batteries for electric vehicles. As an early backer of the company, he has reaped enormous rewards as CATL has grown into a dominant force in the global EV supply chain.

His foresight in identifying the potential of the electric vehicle revolution and backing a key supplier has been the cornerstone of his success. CATL supplies batteries to a vast array of major automotive giants, including Tesla, BMW, and Volkswagen, making it a critical player in the global transition to electric mobility. Cai Hongbin's stake in the company has made him one of the wealthiest individuals to emerge from China's green technology boom. He also serves as the chairman of the investment firm Hubei Changjiang Chengrui Equity Investment.