Kitasho Co., Ltd., produces Kanetsune brand. Kitasho Co., Ltd., is a manufacturer of traditional Japanese style knives, damascus chef knives. Kanetsune Seki, one of the best master craftsmen in Japan, continues the 800-year-old history of Japanese sword-making. Many of the knives forged by the master craftsman Kanetsune Seki are made of blue steel, a type of ultra-high carbon steel.