The Thái Nguyên - Thái Nguyên region is located under the Tam Đảo mountain range and is sheltered from wind and sun, so the temperature in this area is very stable; in addition, this is a semi-mountainous midland, red-brown soil, alternating with many narrow and flat valleys formed mainly on the feralit, acidic magma and ancient alluvium, sandstone, with common pH. From 5.5 to less than 7.0, the soil is slightly acidic, which are very good conditions for the growth of tea plants, giving Tân Cương tea a unique flavor that is not found anywhere else. Thiện Tích tea is picked according to the only standard of 1 bud and 1 leaf to ensure that the highest quality, young tea buds are picked. Tea made by artisans with "golden hands" of Thái Nguyên region with sophisticated traditional secrets in handmade tea.

Túng Sán commune - a place in the Tây Côn Lĩnh mountain range (the roof of the Northeast of Vietnam) has an average altitude of 1500m above sea level, cool climate and fertile soil, under the primeval forest. For hundreds of years, Snow Shan tea has been collected by the Cờ Lao, Dao and Hoa ethnic minorities. Khói Lam Chiều tea uses raw materials from young buds, picked in the spring of the ancient Shan Tuyet tea tree, which is hundreds of years old and grows wild naturally. Thanks to that, the tea buds here are plump and full of life, fully absorbed with the natural flavor of the mountains, the cool and sweet taste lingers in the throat after enjoying each cup of tea. During the brewing process, smoke from some native plants is used as fuel to dry the tea, making the tea flavor of this region very recognizable.