Pu-erh tea

„Once dry, maocha can be sent directly to the factory to be pressed into raw pu'er, or to undergo further processing to make ripened pu'er. Sometimes Mao Cha is sold directly as loose-leaf "raw" Sheng Cha or it can be matured for 2–3 years in loose leaf form due to the faster rate of natural fermentation in an uncompressed state. This product is then pressed into numerous shapes and sold as "raw" Sheng Cha as a more matured final product.“

„Meng-Hai Tea Factory started to use the trademark "Da-Yi" around 1978. Xia-Guan Tea Factory started to register the trademarks "Song-He" and "Nan-Zhao" in 1992.“