Most of the early signs were printed on the whole package (such as bamboo baskets and wooden lacquer boxes), but individual tea cakes were invisible. However, in recent years, according to the relevant regulations of the state and Yunnan, the number (logo number) should be printed on the outer packaging of cake tea produced by regular tea factories.
For example, the serial numbers of Pu 'er tea are 7262 and 80 1, with 4 digits (logo number). For example, 7262 is produced by fermentation process in 1972, 6 is grade 6 tea, and 2 is the serial number of Menghai tea factory.
Extended data:
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1. Cake tea: flat and disc-shaped, in which each piece of lychee cake has a net weight of 357 grams, and every seven pieces are hoisted, each barrel weighs 2500 grams, hence the name lychee cake.
2. Tuocha: The shape is about the size of a rice bowl, each with a net weight of 100g and 250g, and the mini small Tuocha has a net weight of 2g-5g.
3, brick tea: rectangular or square, 250 grams-1000 grams, made this shape mainly to facilitate transportation.
4. Golden melon tribute tea: pressed into semi-melon shapes of different sizes, ranging from 100 grams to hundreds of kilograms.
5. Mushroom tea: Pu 'er tea is pressed into mushroom shape, weighing about 250g.
6. Column tea: pressed into a column of Pu 'er tea, and then wrapped with bamboo chips or bamboo shells. The weight is as small as 100g.