Yao Jia. "The son of Yao Xinyi of Danone Du Nan Group is Yao Jia. Company Profile of Du Nan Group Co., Ltd. Du Nan Group ranks 265th among the top 500 Chinese enterprises in 20 13 and 47th among the top 500 private enterprises in China in 20 13. It is one of the top 100 competitive enterprises in China.