Puerh History - Pu-erh.Net

„In 1940, the Chinese State owned company CNNP started to manufacture Pu Erh Tea with a trademark "Zhong-Cha" at the Fo-Hai Tea Factory (now called "Meng-Hai Tea Factory"). Later, Yun-Nan Tea Company and Guang-Dong Tea Company also produced the same brand and started to export abroad. There were varieties such as red-label, green-label, yellow-label, small-letter and big-letter etc.“

„When examining maocha, the colour of gu shu leaves tend to be more highly contrasted with a bright white hairy bud/tip surrounded by a grey, open leaf wrapper, with dark black stem & leaves. By comparison, tai di cha is almost all black, due to the use of fertilizer, the leaves grow quickly and the buds have less white hairs.“