• Please be informed that our office will be closed for upcoming Labour Day holiday on 1st May 2019. There may be potential delay of response/shipment from supplier due to Japan Golden Week holiday which falls on 27th April to 6th May 2019.
    We seek your kind understand, should there be any delay. Click here for details


Since the company's founding, it has focused on the production of compact valves and couplings. The path followed by ASOH is a direct reflection of the history of compact valves. This includes the production machinery that supports the economy, the scientific and medical equipment that protect our lifestyle and the drink servers that keep our meals vivid. The active fields utilizing ASOH products are very diverse. ASOH will continue to carve out new markets into the future, endeavoring to create innovative products.