China Green teas are graded according to size, shape and the age of the tea leaves.
Gunpowder; Imperial; Young Hyson; Twanksay; Hyson Skin; Dust;
India Green teas are graded from the leaf size and the style.
Grades for India Teas – Fine Young Hyson; Young Hyson; Hyson No. 1; Hyson; Soumee; Fannings and Dust;
Reference guide: “The Little Black Book of Tea” by Mike Heneberry