Where is Pu 'er Hayes Tea Factory?

For example: Dahongyin, 88 green, Chinese cabbage, Pu 'er tea from Menghai, four major tea factories. Including Kunming Tea Factory (now Yunnan Chinese Tea Company), Xiaguan Tea Factory (now Xiaguan Tuocha Group), Menghai Tea Factory (now Dayi Tea Co., Ltd.) and Fengqing Tea Factory (now Dianhong Group).

These four major tea factories used to belong to China Tea Yunnan Company. Now Kunming Tea Factory is gone, and others are operated separately. The brand of Menghai Tea Factory is Dayi, Xiaguan Tea Factory is Xiaguan Tea Factory, and Fengqing Tea Factory is Fengpai Tea Factory.