Qimen black tea is the only black tea among the top ten famous teas, known as the "most fragrant group", and Tianzhihong is the most representative brand of Qimen black tea. Anhui Qimen Black Tea Development Co., Ltd. was founded in 1993, Chairman Wang Chang is currently serving as the president of Qimen Black Tea Association, its annual production capacity of tea is more than 3,500 tons, is currently the largest production and processing enterprises of Qimen Black Tea, and is also one of the drafting units of Qimen Black Tea local standards, with three independent standards, with at least 14 patents in production and processing, such as strip tea sorting and grading production line, tea conveying and distribution device, etc.
 
Large-scale and standardization have always been the key issues in modern tea production, in the two stages of initial processing and finishing of tea, Tianzhihong has developed and built a clean and intelligent production line, which has qualitatively improved its quality and efficiency. At present, Tianzhihong has developed a high-quality tea production base of 56,000 acres, of which 21,000 acres are export records and EU BCS organic certification bases, and has been awarded the leading enterprise of agricultural industrialization in Anhui Province and the key leading enterprise of agricultural industrialization of national supply and marketing cooperatives, and has been identified as "Qimen black tea production technology display point enterprise". After winning the gold medal at the Panama Exposition in 1915, Tianzhihong Keemun black tea won the gold medal at the 2015 Milan World Expo.
 
The traditional Keemun black tea, now known as Keemun Gongfu, was mainly exported at the earliest, and the tea leaves were cut off, with a length of 0.6-0.8cm, and the finished tea was relatively average. At the end of the 90s, Qimen black tea began to face the domestic market, and there were new attempts in the form, such as drawing on the Biluochun process to produce Qimen fragrant snails, and drawing on the Huangshan Maofeng process to produce Qimen Maofeng, both of which are reflected in the local standards of Qimen black tea, which are different from the strip-shaped Qimen Gongfu, these two processes are called curly or curved Qimen black tea.
 
In terms of the number of products, most companies prefer modern Keemun black tea, and the same is true for Tianzhihong. The modern process Qi Hong is more delicate in form, but the degree of fermentation is lower than that of the traditional Qi Men labor, which is actually similar to the modern process of Fujian small black tea, in the aroma and taste are not as strong as the traditional process, the sweet floral aroma is obvious, and the taste is more sweet, but this is the result of market choice after all, that is to say, its modern process is more suitable for the taste of most people. Due to the basic realization of the machine, Tianzhihong can provide less than 200 yuan per catty of ration tea, even if it is a new tea friend, we still recommend buying its mid-range series, the price per catty is about 500 yuan. Of course, to experience the purest "Qimen incense", you might as well choose its traditional craftsmanship of the special grade Qi Hong 1915 series, 70g canned price of 138 yuan, dry tea is small and delicate, there is an obvious golden tip, because the buds are relatively rich, mellow and rich in sweet fragrance. For convenience, Tianzhihong also provides 25 bags of triangular bags, priced at 38 yuan, suitable for office drinking.