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According to data*2 from the Ministry of Land, Infrastructure, Transport and Tourism, the frequency of sudden torrential downpours of rain and other types of rainfall exceeding 50 mm per hour has increased by 30% in the last 30 years. In recent years, the rainfall has also become more localized and concentrated. People should not be complacent when it comes to rainfall of this kind, even if there are no mountains or big rivers nearby. Especially in urban areas where the paved area of roads is increasing, it is difficult for rainwater to penetrate underground, and the amount being discharged into sewage lines is rapidly increasing. In addition to the sudden swelling of rivers and the flooding of roads and underpasses, flooding in underground spaces such as terminal station premises can cause extensive damage in a short time. The reason for this is that the amount of precipitation far exceeds the existing drainage capacity, and cannot cope with such inundations of rainwater. The key to protecting society is how quickly we can respond to the looming threat of sudden torrential downpours.

Our past achievements are still fresh in our minds, including the dispatch of trucks utilizing our pumps by the Japanese government to Thailand, where flooding was frequent, as well as heavy rainfall in July 2018 that hit many areas of Japan, especially western Japan, and again in July 2020, this time causing extensive damage in the Kyushu region.