Credit Suisse first gave Bishengyuan (0926.HK) a stronger rating than the general market rating, setting a target price of HK$4.00.

Bishengyuan is the largest health tea supplier in China, with a market share of 18.8% in 2009, while the second-ranked company had a market share of 5.5%. Credit Suisse believes that Bishengyuan has surpassed its peers with its product portfolio and distribution network (entering 27% of retail pharmacies in China and will expand further into supermarkets).

The stock rose 3.79% throughout the day to close at HK$3.56.