Maezawa Water Supply Equipment Co., Ltd.

Founded: July 15, 1937 (Showa 12): Founded as Showa Manufacturing

Founded : July 15, 1937

Established: January 23, 1957 (Showa 32): Established Tokyo Water Supply Industry Co., Ltd. at 107 Takabamacho, Meguro-ku, Tokyo

Established : January 23, 1957

(Showa 40): Renamed to Maezawa Water Supply Equipment Co., Ltd.

Renamed to Maezawa Kyusou Industrial Co., Ltd.

(Showa 43): Constructed Saitama factory in Koshigaya-cho, Kita-Katsushika District, Saitama Prefecture (now Koshigaya City)

Constructed a factory in Koshigaya City (formerly Koshigaya Town), Saitama Prefecture

(Showa 47): Designated as a specified inspection factory by the Japan Water Association

Designated as a specified inspection factory by the Japan Water Association

(Showa 63): Merged with Maezawa Industrial Co., Ltd.

Merged with Maezawa Jitsugyo Co., Ltd.

(Heisei 2): Saitama factory certified as a JIS display authorized factory

Saitama factory certified as a JIS display‑approved factory

(Heisei 3): Registered on the trading floor of the Japan Securities Association

Registered shares on the over‑the‑counter market of the Japan Securities Dealers Association

(Heisei 6): Constructed Fukushima factory in Shirazawa Village, Adachi District, Fukushima Prefecture

Built a Fukushima plant in Shirazawa Village, Adachi District, Fukushima Prefecture

(Heisei 7): Fukushima factory certified as the 10th model material industry environmental excellence factory

Fukushima plant certified as the 10th Excellent Industrial Environment Factory for Raw Materials

(Heisei 9): Obtained ISO 9001 quality assurance international standard certification

Obtained ISO 9001 International Quality Assurance Standard certification

(Heisei 10): Listed on the Second Section of the Tokyo Stock Exchange

(Heisei 10): Constructed a business building at 2-14-16 Takabamacho, Meguro-ku, Tokyo

Listed shares on the Second Section of the Tokyo Stock Exchange

Constructed an office building at 14-16 Takabamachi 2-chome, Meguro-ku, Tokyo

(Heisei 11): Fukushima factory certified as a JIS display authorized factory

Fukushima plant certified as a JIS-marked authorized plant

(Heisei 12): Opened Osaka logistics center

Opened Osaka logistics center

(Heisei 13): Opened Kyushu logistics center

Opened Kyushu logistics center

(Heisei 14): Obtained ISO 14001 environmental management system certification (headquarters, Tokyo sales office, Saitama factory, Fukushima factory)

(2002) : Established Maezawa Kyusou (Nanchang) Co., Ltd. in Nanchang City, Jiangxi Province, China

(2002) : Obtained conformity inspection permit for electric appliances (electric heating devices) under the Electrical Appliance & Material Safety Law (Fukushima plant)

Obtained ISO 14001 Environmental Management System certification (headquarters, Tokyo office, Saitama plant, Fukushima plant)

Established Maezawa Supply (Nanchang) Co., Ltd. in Nanchang, Jiangxi Province, China

Obtained conformity inspection permission for electric appliances (electric heating devices) under the Electrical Appliance & Material Safety Law (Fukushima plant)

(Heisei 16) : Completion of the Saitama-Fukushima Integrated Reallocation Plan

(2004) : Commenced production of products using new material (lead‑free alloy)

Completion of the Saitama-Fukushima Integrated Reallocation Plan

Commenced production of products using lead-free alloy

(2005) : Introduced a new shareholder benefit program

(2005) : Listed shares on the First Section of the Tokyo Stock Exchange

Established a shareholder benefit program

Listed shares on the First Section of the Tokyo Stock Exchange

(2015) : Moved headquarters to 14‑4, 2‑chome, Takabamachi, Meguro-ku, Tokyo

Relocated headquarters to 14-4 Takabamachi 2-chome, Meguro-ku, Tokyo

(2020) : Made Maezawa Living Solutions Co., Ltd. a subsidiary

Made Maezawa Living Solutions Co., Ltd. a subsidiary

(2022) : Transitioned to the Prime market of the Tokyo Stock Exchange

Transitioned to the Prime market of the Tokyo Stock Exchange

(2023) : Absorbed and merged Maezawa Living Solutions Co., Ltd.

Absorbed and merged Maezawa Living Solutions Co., Ltd.

(2023) : Moved to the Standard market of the Tokyo Stock Exchange on October 20

On October 20, transitioned to the Standard market of the Tokyo Stock Exchange

(2025) : Fully transferred Maezawa Kyusou (Nanchang) Co., Ltd.

(2025) : Absorbed and merged QSO Industrial Co., Ltd.

Transferred all shares of Maezawa Supply (Nanchang) Co., Ltd.

Absorbed and merged QSO Industrial Co., Ltd.