Sanada twine has been used in paulownia boxes for storing tea tools since the Sengyu period. After over 450 years of time, it still serves as a famous role without the change. In addition, the seki was defeated in the battle of the hara and sold by Yomura Sanada to serve life in the Kyukyama of the first place and sold the sturdy string made by Sanada and it became known as the "Sanada Cord," which is very durable and beautiful, and is also used for hanging paulownia boxes, tightening, chair seats, Japanese accessories, and wrapping. 4 (12 mm) wide flat string, 3 m long.