Tea flavin is a kind of pigment in black tea.The  foreign clinical practice shows that the flavin has more medical values than the tea polyphenol.It can effectively adjust the blood-libid,prevent angiocardiopathy,sugar diabetes,all kinds of tumor or cancer etc.The flavin whcih is known as "soft gold in the tea" is without any toxic side effects.          
Tea flavin is stable under PH 4-8.It will easily go bad when touching strong acid.strong alkail,strong sunlight ,over heating and metal materials.

We can manufature all kinds of specifications of  tea flavins according to the customers' requirements.