Since the development of Japan's first steam cleaner in 1952, we have not viewed cleaning machines merely as tools for cleaning, but rather as partners in improving the global environment. We have thoroughly pursued not only performance aspects such as efficiency, functionality, and durability, but also the development and production of cleaning machines powered by clean energy, as well as pollution-free disposal and reuse. Through this pioneering spirit and accumulation of technology, we have achieved an exhaust emission value that is nearly zero, even with kerosene-powered models. Furthermore, we have developed environmentally friendly hot water cleaning machines such as the "Yusen," a clean, safe, and quiet high-pressure hot water cleaner powered by nighttime electricity, and the gas-powered high-pressure hot water cleaner "Gas Wash."