Puerh History - Pu-erh.Net

„Yunnan Tea Company standardized the trade number for Pu Erh Tea in 1976 for the purpose of export. Each bingcha has 4 digits: the first 2 digits indicate the manufacturing year, the third digit indicates the leaf grade, the last digit indicates the tea factory (e.g. Kun-Ming 1, Meng-Hai 2, Xia-Guan 3, Pu Erh 4). The loose-leaf tea has 5 digits with the third and fourth indicating the class level of raw materials. Examples of early trade numbers for Puerh Tea are 7452, 7562, 7572, 75671, 76563.“

„I had heard from other puer buyers that Ma Hei farmers now use pesticide & fertilizer to boost yields. But as we stood there critiquing this batch of Ma Hei tea, a large, multi coloured beetle crawled out of the leaf pile. “We call this guy the tea boss” Mr. Gao explained. “If he’s around, it’s a good sign!”“