Pien Tze Huang is a big enterprise, but it seems that there are few new products and few kinds of drugs, so I don't like this kind of enterprise that has money but only engages in this marginal variety. Pien Tze Huang is a good variety, but enterprises must make long-term plans and make more efforts in the research and development of new drugs if they want to develop.

As for whether the safety factor of this tea is high or not. This is food, the requirements are not high, it is easy to meet the standards, and there should be no problem with safety.