After the start of manufacturing Air Tools, over 50 years,the quality has been consistently put into our practice and product design for obtaining the satisfaction of all customers. Development in production has constantly raised our products to a higher performance. Customers have been calling for high quality and capability of our products, year by year. SI branded tools is not only an Air tool sine we always intend to develop it into a new better product. We will always do our best to meet your satisfaction.

President Hiroyoshi Izumisawa