At the pinnacle of his career, he served as the board chairman and Chinese Communist Party Committee Secretary of China Resources, a state-owned conglomerate with interests in the beverages, consumer goods, and food industries.
In 2004, Song, at age 41, became the general manager (chief executive) of China Resources, then he became chairman of the board in May 2008.
He also served as the chairman of China Resources Power and China Resources Microelectronics Limited, vice-chairman of China Vanke Co., Ltd, and non-executive director of Zhejiang Geely Holding Group Co., Ltd. On April 15, 2014, Wang Wenzhi, a reporter at Economic Information (经济参考报) wrote to the Central Commission for Discipline Inspection (CCDI), the Chinese Communist Party's central anti-corruption body, accusing Song Lin of maintaining a mistress and money laundering through his mistress.
[citation needed] After investigation by the CCDI, Song Lin was expelled from the Chinese Communist Party on September 11, 2015.
[8] Chinese media reported that Song had close relations with two politicians: former CCP Politburo Standing Committee members Zeng Qinghong and He Guoqiang.