Herb Green Health Biotech specializes in tea products such as instant tea powder, dried tea powder, green tea powder, and oolong tea powder. They also offer finished products containing tea ingredients for cosmetics, processing aids, additives, and chemical alternatives. They have a wide range of tea-related ingredients such as EGCG, tea polyphenols, catechin, L-theanine, tea flavonoid, tea theaflavin, organic matcha powder, catechins, organic kombucha tea, and more.