We received a request to "try it on a chair seat." The seat of a chair is subjected to considerable weight when sitting on it.

That is why we repeatedly experimented with materials to increase the strength of cotton leather. At the same time, we continued to collect modest data to solve the problems of the peculiar smell and difficulty in drying that we had received from many customers.

Many resins and grains are lined up in the workshop. I am doing chemistry experiments in a rural village, thinking that I would love science if I could do experiments with the young generation in Japan through trial and error.