It is no exaggeration to state the products that Japan is so happy with are partly a result of the large precision and sharpness of these blades. The origin of umbrellas in Japan is alleged being round the Heian period of time (794 - 1185), every time they were launched https://traditionaljapanesecrafts15937.wizzardsblog.com/36206327/fascination-about-traditional-japanese-craftsmanship