In 1976, ASOH successfully developed Japan's first compact ball valve with integrated main body and fitting, the “Aceball.” Since then, we have successively brought revolutionary products with excellent functionality and design to the market, such as the small needle valve "Ciccolo" and the small check valve “A check.”

In addition, since our founding, we have been committed to manufacturing high-quality products through domestic production, and have a wide variety of standard products in our lineup. Furthermore, we are able to meet all of your needs by offering custom-made products with special specifications. Thanks to all of you, we are currently the first stop for small valves.

Moving forward, with the evolution of technologies such as AI and IoT, the manufacturing industry will be required to respond to new increases in demand.
In order to meet the increasingly sophisticated and complex needs of our customers, ASOH is constantly striving to adopt the latest technology, as well as focusing on expanding our production capacity and services. In order to be indispensable to our customers, we will provide advanced products to both the domestic market but also globally to overseas markets.