Pu'er Tea Factory

Yang Kai’s account in Pu Erh magazine assigns factory digit 4 to Pu Erh Tea Factory in its discussion of the 1976 numbering rules. The article explicitly says its transcription of the document has been adjusted; the complete original document has not been inspected here. Xiaguan’s own chronicle independently records the December 1976 numbering meeting and its own ending digit 3, but does not establish every factory assignment. The uncited factory list in English Wikipedia is not treated as contrary historical evidence. Codes should be checked for the particular producer, product and period rather than used as universal manufacturer identifiers.

《标号级时代的星空丨那些民营茶厂（二）》 says that in October 2004 香港长泰实业（深圳）有限公司 bought the Pu'er County factory and formed 云南普洱茶（集团）有限公司. 《标号级时代的星空丨那些民营茶厂（一）》 and 《普洱杂志：标号级普洱茶，激荡的十五年》 say that in 2004 another buyer acquired '云南普洱茶厂', forming 思茅永年茶业公司普洱茶厂 and later 云南普洱茶厂有限公司. Both are from the same magazine. The sources do not say whether these were the same plant, different assets, or a brand-name purchase.

The cited sources do not establish a separate state 思茅茶厂. The 1975 factory was in Pu’er County, then part of Simao prefecture. From 1956 the Menghai factory was called 思茅专区勐海茶厂, according to 《历史上著名的普洱茶4大茶厂》. One successor’s name began 思茅永年. The label “Simao Tea Factory” alone does not distinguish these entities.