Trà Matcha is one kind of special green tea with the way of drink it like “the way of tea” . And Japanese matcha is most famous in the world because of its taste and benifits.

And uji matcha is a high brand matcha in Japan because of its history:
“Zen Buddhism and the Chinese methods of preparing powdered tea were brought to Japan in 1191 by the monk Eisai. Although powdered tea has not been popular in China for some time, now there is a global resurgence in Bột matcha tea consumption, including in China. In Japan it continued to be an important item at Zen monasteries, and became highly appreciated by others in the upper echelons of society during the fourteenth through sixteenth centuries.”

Source: Wikipedia