However, the daily fluorine intake amounts could be limited within the tolerance (4.0 mg) when the fluorine contents of brick tea were lower than 400 ppm and the daily consuming amounts was less than 13.7 g.

• 但饮低氟含量(400ppm以下)砖茶且日饮用量少于13.；7克者；则可控制日摄氟量在限量(4