Supporting Member
  • LIXIL CORPORATION
  • KUROSAKI HAKUDO CO.,LTD.
  • SHIMIZU CORPORATION
  • MIZUSAWA INDUSTRIAL CHEMICALS, LTD.
  • UNION CHEMICAL CO.,LTD.
  • KUNIMINE INDUSTRIES CO.,LTD.
  • TAIHEIYO CEMENT CORPORATION   
  • INTERNATIONAL CLAY THERAPY ASSOCIATE
  • OBAYASHI CORPORATION
  • KATAKURA & CO-OP AGRI CO., LTD
  • SHOKOZAN MINING CO.,LTD.
  • JAPAN PETROLEUM EXPLOTATION CO., LTD.
  • JAPAN ACTIVATED CLAY CO.,LTD.
  • HIKAWA MINING CO.,LTD.
  • HOJUN CO.,LTD.
  • OMI MINIG CO.,LTD. INDUSTRIAL RESEARCH CENTER OF SHIGA PREFECTURE  
  • SHIRAISHI CENTRAL LABORATORIES CO., LTD.
  • INDUSTRIAL RESEARCH CENTER OF TOCHIGI PREFECTURE
  • NIKKO CORPORATION
  • VOLCLAY JAPAN CO.,LTD
  • NIHON PARKERIZING CO.,LTD.
  • HOYO BENTONIOTE MINING CO.,LTD.
  • INDUSTRIAL RESEARCH CENTER OF SHIMANE PREFECTURE
  • BODY CLAY CO.,LTD.
  • KUBOTA CORPORATION
  • KANKYO ZAIRYO ENGINEERING Co., Ltd.
  • RASA INDUSTRIES, LTD.
  • TODAKOGYO CORPORATION