Nippon Sanso Holdings has brought a new manufacturing facility for diborane, a semiconductor materials gas, on stream in Asan, South Korea. Through long-term on-site contracts and a supply system for high-purity gases, it has maintained a core operating profit margin of approximately 15% despite lower shipment volumes.
Nippon Sanso Holdings ranks among Japan's leading industrial gas suppliers and is fourth globally. Revenue for the fiscal year ending March 2026 is approximately ¥1,359.6 billion, with the overseas contribution increasing; by region, Japan, the United States and Europe account for the largest shares. Contrary to its consumer-facing image, the company supplies a diverse range of gases centered on cryogenic air separation technology.
According to its financial results materials, the core operating profit margin remained high at 14.9% despite lower shipment volumes. Pricing management, which absorbs rising costs such as electricity through price pass-through, is supporting profits. Long-term on-site supply contracts, oligopolistic markets and ultra-high-purity gases form the pillars of its earnings structure.
In South Korea, NSMK has developed a new facility in Asan. Diborane is positioned as its main product, with the facility operating in coordination with the existing plant in the Eumbong district and future expansion also envisaged. The aim is to avoid the challenges of long-distance transport and strengthen stable supply and quality control through local production for local consumption.
Under the medium-term management plan Next Innovation 2030, the company has set targets of ¥1,500–1,575 billion in revenue and ¥250–275 billion in core operating profit, identifying the electronics sector as a priority for growth investment. While fluctuations in semiconductor investment could directly affect demand for gases, the proximity of on-site facilities is also viewed as potentially expanding opportunities for joint development.