I'd like to recommend "Huzhou Wang Yipinzhai Bizhuang" to you. It is also an old Chinese brand. It was founded in Qing Qianlong for six years (A.D. 1741) and has a history of more than 26 years. It is the oldest professional Bizhuang in China, which is famous at home and abroad for producing "Tianguan" brand lake pens.
why do you recommend it? Because I have read a lot of reports, many modern and contemporary masters of painting and calligraphy, such as Li Keran, have high demands on writing brushes. At one time, they could not buy satisfactory writing brushes. Later, Wang Yipin helped him to make them specially.
This is its official website, with the address and telephone number on it. You can contact it:
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However, it should be noted that a good brush needs not only exquisite craftsmanship, but also selected high-quality wool, so it is expensive.