High Pressure Gas Industry Co., Ltd.

June, Showa 33 (1958): Established Chubu Gas Industry Co., Ltd. (capital 3 million yen) in Shizuoka City for the purpose of selling dissolved acetylene and its raw materials.

Established: June 26, 1958

Established Chubu Gas Industry Co., Ltd. (capital 3 million yen) in Shizuoka City for the purpose of selling dissolved acetylene and its raw materials

Headquarters moved to Osaka City

Renamed the company to Chubu Gas Industry Co., Ltd., absorbed Mie Acetylene Co., Ltd. to establish the Mie plant: commenced production of dissolved acetylene.

Renamed company to Chubu Gas Industry Co., Ltd. and absorbed Mie Acetylene Co., Ltd. to become Mie Factory

Commenced production of dissolved acetylene

Established the Sakai plant.

Absorbed Kyoto Acetylene Co., Ltd. to form the Kyoto plant.

Commenced manufacturing of adhesives.

Established the Wakayama plant.

Merged to change the share nominal value for the purpose of going public, becoming High-Pressure Gas Industry Co., Ltd.

Listed shares on the Second Section of the Osaka Stock Exchange (capital 120 million yen).

Absorbed Nippon Acetylene Industry Co., Ltd. to form the Hamamatsu plant.

Established the Okayama plant.

Established the Harima plant.

Opened the Tokyo sales office.

Established the Hiroshima plant.

Established the Kanagawa plant.

Moved headquarters to 33 Taifujimachi, Kita-ku, Osaka (Osaka Gōdō Building).

Opened the Chiba sales office.

Established the Nagoya plant.

Established the Sakura plant.

Opened the Kawaguchi sales office.

Absorbed Kyushu Electric Industry Co., Ltd. to establish the Kokura sales office and Oita sales office.

Renamed the Tokyo sales office to Tokyo office; renamed the Chiba sales office to Chiba plant.

Renamed Tokyo Sales Office to Tokyo Office

Renamed Chiba Sales Office to Chiba Factory

Opened Hiroshima branch office

Listed shares on the Tokyo Stock Exchange Second Section (capital 1.4 billion yen)

Opened Osaka Research Institute; Opened Haneda branch office; Head office location changed to 1‑5 Dooyamacho, Kita‑ku, Osaka (Osaka Goudou Building) due to residential address change

Established Osaka Research Institute

Opened Haneda Sales Office

Headquarters address changed to 1-5 Dooyamacho, Kita-ku, Osaka City (Osaka Goudou Building) due to residential designation change

Shares designated for the First Section of the Osaka and Tokyo Stock Exchanges (capital 1.545 billion yen)

Established Ryuno factory

Opened Niigata branch office

Opened Sendai branch office

Opened Tokyo Research Institute

Shares selected as a listed trading stock on the Osaka Stock Exchange

Opened Kanagawa branch office

Opened Kasugai branch office

Opened Matsuyama branch office

Established Sendai factory (currently Sendai Acetylene Co., Ltd.) : Opened Tokuyama branch office

Established Sendai Factory (currently Sendai Acetylene Co., Ltd.)

Established Tokuyama Sales Office

Issued first unsecured convertible bonds (total convertible bonds 8 billion yen)

Shares selected as a listed trading stock on the Tokyo Stock Exchange

Established Shiga High‑Pressure Gas Distribution Center

Closed Kanagawa branch office and merged into Kanagawa factory

Renamed Kokura branch office and Oita branch office to Kokura factory and Oita factory respectively

Established Shimokita Gas Center

Relocated Kanagawa factory

Opened Shizuoka Sales Office and Yokkaichi Branch Office.

ISO 9001 audit registration (Sakura Factory).

Opened Nobeoka Sales Office.

Opened Yokohama Sales Office.

Opened Gifu Branch Office.

Opened Asahikawa Branch Office.

Relocated Haneda Sales Office.

Opened Ho Chi Minh City (Vietnam) Resident Office.

Relocated Tokyo Office.

Relocated headquarters from 5th floor, Osaka General Building, 1-5 Dooyamacho, Kita-ku, Osaka to 28th floor, Umeda Center Building, 12-4 Nakazaki Nishi 2-chome, Kita-ku, Osaka.

Established local subsidiary 'KOATSU GAS KOGYO VIETNAM CO., LTD.' in Vietnam.

Established Omiya Factory and renamed Kawaguchi Sales Office to Kawaguchi Shipping Center.

Established Omiya Factory

Renamed Kawaguchi Sales Office to Kawaguchi Shipping Center

Opened Osaka Research Institute.

Renamed Sendai Sales Office to Sendai Factory and established Sendai Factory; closed Ho Chi Minh City (Vietnam) Resident Office.

Renamed Sendai Sales Office to Sendai Factory and established Sendai Factory

Closed Ho Chi Minh (Vietnam) Resident Office

Registered JCSS operator

Relocated Kashima Sales Office.

Integrated Wakayama Factory into Sakai Factory and renamed Wakayama Factory to Wakayama Sales Office; relocated Osaka Research Institute to Tsuchiura City and renamed it Tsuchiura Research Institute; relocated Koga Sales Office and renamed it Koyama Sales Office.

Integrated Wakayama Factory into Sakai Factory and renamed Wakayama Factory to Wakayama Sales Office

Moved Osaka Research Institute to Tsuchiura City and renamed it Tsuchiura Research Institute

Moved Furukawa Sales Office and renamed it Koyama Sales Office

Opened Okayama Sales Office

Closed Shizuoka Sales Office; renamed Hamamatsu Factory to Hamamatsu Sales Office; renamed Morioka Branch Office, Gunma Branch Office, Tama Branch Office, Koto Branch Office, Fukuoka Branch Office to Morioka Sales Office, Gunma Sales Office, Tama Sales Office, Koto Sales Office, Fukuoka Sales Office respectively.

Closed Shizuoka Sales Office

Renamed Hamamatsu Factory to Hamamatsu Sales Office

Renamed Morioka Branch Office, Gunma Branch Office, Tama Branch Office, Koto Branch Office, and Fukuoka Branch Office to Morioka Sales Office, Gunma Sales Office, Tama Sales Office, Koto Sales Office, and Fukuoka Sales Office respectively

Established Tsu Factory.

Relocated Koyama Sales Office and renamed it Utsunomiya Sales Office.

Relocated Matsuyama Sales Office.

Relocated Morioka Sales Office

Transitioned to the Prime Market following the Tokyo Stock Exchange market reorganization

Manufacturing operations of Kokura Factory transferred to Kitakyushu Gas Center Co., Ltd.: Kokura Factory relocated and renamed Kitakyushu Sales Office

Transferred manufacturing operations of Kokura Factory to Kitakyushu Gas Center Co., Ltd.

Moved Kokura Factory and renamed it Kitakyushu Sales Office

Established Fukushima High-Pressure Gas Distribution Center: Goriyama Sales Office and its branch renamed Fukushima High-Pressure Gas Distribution Center Goriyama Shipping Office and Fukushima High-Pressure Gas Distribution Center Goriyama Branch

Established Fukushima High-Pressure Gas Distribution Center

Renamed Koriyama Sales Office and Koriyama Sales Office Sub-Office to Fukushima High-Pressure Gas Distribution Center Koriyama Shipping Office and Fukushima High-Pressure Gas Distribution Center Koriyama Sub-Office respectively

Closed Hiroshima Sales Office and integrated into Hiroshima Factory

Opened Himeji Shipping Office

Established Koka Factory

Manufacturing of Mie Factory transferred to Tsukuba Factory and renamed Kuwana Sales Office

Closed Shimokita Gas Center

Closed Okayama Factory

Renamed Okayama Sales Office to Kurashiki Factory