CMB International, a provider of investment banking services, and Tiantu Capital, a private equity company, led a $300m Series D round in Guoquan Shihui, a Chinese convenience store chain. With the new financing, the firm will further march into the market in China's third and lower-tier cities. It also plans to explore business opportunities in the fresh produce field with its first fresh produce factory in east-central China's Zhengzhou City.