Founded in 1986 by Lin Yongmao and Lin Tao, Xinjiang County, Shanxi Province, is a brand cultural enterprise integrating "science, industry and trade". The institute has independently developed dozens of series and thousands of inkstone varieties. Its exquisite production skills, excellent product quality, exquisite carving art, profound cultural connotation, won the wide praise and favor of painting and calligraphy celebrities at home and abroad; the products are not only sold home, but also exported to Japan, South Korea, Singapore, the Philippines, Australia, the United States and dozens of countries. Since its establishment, the institute has won more than 200 international and domestic awards. Jiangzhou clear mud inkstone has become a beautiful "cultural name card" representing Xinjiang, Yuncheng and Shanxi. In 2008, his production skills were selected into the National Intangible Cultural Heritage Protection List. He has won the UNESCO "World Outstanding Handicrafts Badge" for six times. He has won the title of "National Treasure" in the four treasures of Chinese study industry for six times. He has won the honorary title of "Chinese National Art Treasure" for four times.