... Foreign TradePu-erh Tea: the brick tea, the cake tea, the ball tea, loose tea, collection tea, etc.What is Pu'er tea ?Pu'er tea has a history ... fermentation aging process. It is characterized by its reddish brown tea leaf color, deep red infusion color, special aroma and ... 41% in the liver, increases to removeby 66%.5. Tea research institute of southwest agricultural college cooperates with the CPLA ...