Bamboo tube tea, also known as white grass tea, is called "immortal tea" by overseas Chinese. It has a drinking history of nearly 400 years, enjoys a high reputation at home and abroad, and sells well all over the country. This product is refined from many rare plants, such as duck foot anesthetic, white cotton skin, Hei Hu and so on 10. Pharmacological experiments of Sun Yat-sen University of Medical Sciences have proved that it has the effects of clearing away heat and toxic materials, promoting fluid production to quench thirst, promoting digestion and appetizing, and promoting diuresis and dehumidification, and has a good effect on treating colds, fever, urinary system and inflammatory diseases. It also contains potassium, sodium, zinc, copper and iron essential to human body. It is the best quality drink, suitable for all seasons, and can be drunk by men, women and children.