Tea is classified according to its quality level. Different tea leaves have different levels. They are generally divided into special grade, first grade, second grade, third grade, fourth grade, fifth grade, etc. Some special grade teas are also subdivided into special grade tea. First, special second, special third grade, Pu'er loose tea is divided into special grade, first grade, second grade...ten grades, 11 grades in total. Different grades have different qualities. Generally, the grade will be printed on the outside of the corresponding tea leaves. packaging to make it easier for consumers to identify.

Various commercial teas of the same color are graded according to the age and tenderness of the tea leaves. The grade numbers are from small to large, and the tea quality is from high to low. For example, fried green and roasted green tea are often divided into 6 grades and 12 grades (each grade contains 2 grades, and there are also 7 grades and 14 grades). The quality of first grade and second grade is better than that of second grade and third grade. Mei tea among fine teas is also graded. Such as special treasure first and second grade; rare eyebrow first grade and second grade... In order to facilitate negotiation and ordering, exported eyebrow tea often uses a certain number to indicate the color grade.

Extended information:

Value and efficacy

At the beginning of the 19th century, the composition of tea gradually became clear. After modern scientific separation and identification, tea contains more than 450 organic chemical components and more than 40 inorganic mineral elements.

The main organic chemical components include: tea polyphenols, plant alkaloids, proteins, amino acids, vitamins, pectins, organic acids, lipopolysaccharides, sugars, enzymes, pigments, etc.

The organic chemical components contained in Tieguanyin, such as tea polyphenols, catechins, various amino acids, etc., are significantly higher than other teas. The main inorganic mineral elements are: potassium, calcium, magnesium, cobalt, iron, aluminum, sodium, zinc, copper, nitrogen, phosphorus, fluorine, iodine, selenium, etc. The inorganic mineral elements contained in Tieguanyin, such as manganese, iron, fluorine, potassium, sodium, etc., are higher than other teas.

Baidu Encyclopedia-Tea