On the evening of July 6th, 2009, Mengniu Dairy, which was listed in Hong Kong, announced that China Grain Group, the largest grain, oil and food import and export company in China and a fortune 500 company, joined hands with Hopu Investment, a private equity investment fund that has long been concerned about China's investment, and invested in Mengniu with a high capital of HK$ 6 1 billion on the same day. This transaction is also the largest transaction amount of China food industry to date.

COFCO and Hopu invested in Mengniu, creating a new cooperation model of "state-owned capital+private capital+strategic cooperation".