Chairman and Representative Director
NAGATA Kenji (NIPPON SANSO CORPORATION)
Vice Chairs and Representative Directors
YASUZUMI Hirotaka (AIR LIQUIDE Japan G.K.)
SUZUKI Yoshihiko (Suzuki Shokan Co., Ltd.)
Directors
NISHIMURA Hirokazu (AIR WATER INC.)
WADA Naoki (Iwatani Corporation)
KUROKI Motonari (KOATSU GAS KOGYO CO., LTD.)
HIROTA Hirozumi (IWATANI INDUSTRIAL GASES CORPORATION)
AMANO Toshiji (TOKYO GAS CHEMICALS CO., LTD.)
KOIKE Hideo (Koike Sanso Kogyo Co., Ltd.)
FURUKAWA Fumito (TOA Techno-Gas Co., Ltd.)
AGE Koichiro (OSAKA GAS LIQUID Co., Ltd.)
TANAKA Masato (TEIJIN PHARMA LIMITED)
KASUYA Tomoki (AIR WATER INDUSTRIAL AND MEDICAL INC.)
KASAI Ken (HOKURYO CO.,LTD.)
IWASAWA Masayuki (IWASAWA CO., LTD)
NAMBU Atsushi (Nambu co. ltd.)
NAKAMURA Akira (Uno Sanso Co., Ltd.)
OKANO Youtaro (Kobe Sanso Co., Ltd.)
FUJII Munetake (Fujii Shoji Co., Ltd.)
OTA Yoshihisa (TAKAMATSU TEISAN CO., LTD.)
MIYAJIMA Hiroyuki (FUKUHO TEISAN co., Ltd)
Senior Executive Director
HARA Koichi (JIMGA)
Executive Director
ARAI Sumiyo (JIMGA)
Representative Auditor
YAMAGUCHI Ryuta (Resonac Gas Products Corporation)
Auditors
HORIUCHI Hidetoshi (TOHO ACETYLENE CO., LTD.)
MINOGUCHI Motoharu (SETAGAYA SANSO SHOJI K.K.)
(as of June 10th, 2026)