In recent years the demands of the market have become increasingly high. At the same time, companies have been looking for new directions in areas such as the environment. Naigai Rubber was established in 1913, and thanks to some foresight cornered the domestic market in automobile tires. Since then, we have been trusted as a pioneer in the rubber industry, and in careful accordance with the needs of the time, we have expanded to produce tire tubes, industrial products, sports gear, shoes, ...