株式会社コーアツ researches, manufactures, installs and maintains gas suppression systems and holds the leading domestic share in ガス系消火設備. Its NN100 nitrogen suppression system holds 日本消防設備安全センター 性能評定 番号 よ-188号, the performance evaluation required for systems outside the standard 検定 categories. Koatsu is a 正会員 of 日本消火装置工業会, holds MLIT construction licence 般-6 第2828号 for 消防施設工事 and has been ISO 9001 certified since 2000; installations include Pacifico Yokohama and the National Diet Library.