Duport's manufacturing technology is very complicated, scientific and elegant. The raw material is pure natural pollution-free Pu 'er tea from Pu 'er City, Yunnan Province. Dipole is made into nanometer powder by various digital extraction methods, such as water extraction (without additives), concentration, separation, re-concentration, spray drying and so on. This is Dipper instant Pu 'er tea. Tianjin Tasly DiBoer Sales Company's only online sales website is "Great Health Network" (the first one was searched online).