The Sekishū Washi was the first Washi listed the UNESCO Intangible Culture Heritage in 2009. At present, four workshops inherit their traditional.
They cultivate Kozo locally. The Sekishū-Kozo, mainly Aoso (青楮=Green Kozo), is recognized as very high-quality material. Its fibre is thin and tough.
The paper is unique because it uses mid-bark of Kozo, which exists between the outer bark and bast fibres, which contains hemicellulose. Therefore, the colour is naturally yellowish at first. This paper can endure long term storage, becoming whiter and stronger as the years pass.
The "Sekishū Han-shi (Ban-shi)" is one of the most popular paper for brush calligraphy use. But of course, it would be an excellent paper for any purpose.
This district is also positive for international work, especially with Bhutan since 1986. Sending trainers and accepting trainees made a good relationship with them.