Stop production. Tea π is a brand tea beverage produced by Nongfu Spring Company under China Hangzhou Yangshengtang. According to the query of official website, the taste of tea π rose litchi was discontinued on 20 19 13. The reason for the discontinuation of tea π is that the traditional tea beverage has a long life cycle, the added value of the product itself is low, and the consumption level of market people is not clear, which leads to the weak sales market.