• AGC ENGINEERING CO., LTD.
• AGC INC.
• AJINOMOTO ENGINEERING CORPORATION
• ARAKAWA CHEMICAL INDUSTRIES, LTD.
• ASAHI FIBER GLASS CO., LTD.
• ASAHI KASEI CORPORATION
• ASAHI KASEI MEDICAL CO., LTD.
• ASAKI KASEI ENGINEERING CORPORATION
• CENTRAL GLASS CO., LTD.
• CHIYODA CORPORATION
• CHIYODA TECHNO ACE CO., LTD.
• CHIYODA X-ONE ENGINEERING CORPORATION
• CHUBU ELECTRIC POWER CO., INC.
• DAIGAS GAS AND POWER SOLUTIONS CO., LTD.
• DE NORA PERMELEC LTD
• DENKA COMPANY LIMITED
• DENKA CONSULTANT & ENGINEERING CO., LTD.
• DIAMOND ENGINEERING CO., LTD.
• EBARA ENVIRONMENTAL PLANT CO., LTD.
• ELASTOMIX CO., LTD.
• ELECTRIC POWER DEVELOPMENT CO., LTD.
• ENEOS CORPORATION
• ENEOS MATERIALS CORPORATION
• ENEOS MATERIALS TRADING CO., LTD.
• EXEO GROUP, INC.
• FUJI ELECTRIC CO., LTD.
• GUN EI CHEMICAL INDUSTRY CO., LTD.
• HITACHI PLANT SERVICE CO., LTD.
• HITACHI ZOSEN CORPORATION
• HITACHI, LTD.,
• HONSHU CHEMICAL INDUSTRY CO., LTD.
• IDEMITSU KOSAN CO., LTD.
• IHI CORPORATION
• IHI PLANT SERVICES CORPORATION
• IHI POWER SYSTEMS CO.,LTD.
• IHI ROTATING MACHINERY ENGINEERING CO., LTD.
• IHI TRANSPORT MACHINERY CO., LTD.
• JAPAN BUTYL CO., LTD.
• JAPAN COLORING CO., LTD.
• JAPAN ENVIRONMENTAL STORAGE & SAFETY CORPORATION
• JAPAN MARINE UNITED CORPORATION
• JFE ENGINEERING CORPORATION
• JFE ENGINEERING CORPORATION SINGAPORE BRANCH
• JFE ENVIRONMENT TECHNOLOGY COMPANY, LIMITED
• JFE PROJECT ONE CO.,LTD.
• JFE STEEL CORPORATION
• JGC HOLDINGS CORPORATION
• JGC JAPAN CORPORATION
• JGC PHILIPPINES, INC.
• JIM TECHNOLOGY CORPORATION
• JNC CORPORATION
• JNC ENGINEERING CO., LTD.
• JP STEEL PLANTECH CORPORATION
• J-POWER ENTECH INC.
• J-POWER GENERATION SERVICE CO., LTD.
• JSR CORPORATION
• JSR ARTON MANUFACTURING CO., LTD. 
• KAO CORPORATION
• KAWAKEN FINE CHEMICALS CO., LTD.
• KEY COFFEE INC.
• KOBELCO ECO - SOLUHONS CO., LTD.
• KRATON ENEOS ELASTOMERS K.K.
• KUBOTA CORPORATION
• KUBOTA ENVIRONMENTAL ENGINEERING CORPORATION
• KURARAY ASIA PACIFIC PTE. LTD.
• KURARAY CO., LTD.
• KUREHA CORPORATION
• KUREHA ECOLOGY MANAGEMENT CO., LTD.
• KURIMOTO,LTD.
• LION ENGINEERING CO., LTD.
• METAWATER CO., LTD.
• MITSUBISHI CHEMICAL ENGINEERING CORPORATION
• MITSUBISHI HEAVY INDUSTRIES ENGINEERING CO., LTD.
• MITSUBISHI HEAVY INDUSTRIES ENVIRONMENTAL &CHEMICAL ENGINEERING CO., LTD.
• MITSUBISHI HEAVY INDUSTRIES POWER ENVIRONMENTAL SOLUTIONS, LTD.
• MITSUBISHI HEAVY INDUSTRIES POWER IDS, LTD.
• MITSUBISHI HEAVY INDUSTRIES TRANSPORTATION AND CONSTRUCTION ENGINEERING, LTD.
• MITSUBISHI HEAVY INDUSTRIES, LTD.
• MITSUBISHI KAKOKI KAISHA., LTD.
• MITSUBISHI MATERIALS CORPORATION
• MITSUBISHI MATERIALS TECHNO CORPORATION
• MITSUBISHI POWER, LTD.
• MITSUI CHEMICALS, INC.
• MITSUI E&S HOLDINGS CO., LTD
• MITSUI ELASTOMERS SINGAPORE PTE.LTD.
• NANKAI CHEMICAL CO., LTD.
• NIPPON LIGHT METAL CO., LTD.
• NOF CORPORATION
• OSAKA GAS CO., LTD.
• OSAKA SODA CO., LTD.
• PARKER ENGINEERING CO., LTD.
• RAIZNEXT CORPORATION
• RESONAC CORPORATION
• SANKI ENGINEERING CO., LTD.
• SANKI KAKOU CO., LTD.
• SHIN-ETSU CHEMICAL CO., LTD.
• SHIN-ETSU ENGINEERING CO., LTD.
• SOUTH KASHIMA POWER PLANT INC.
• SUGAI CHEMICAL INDUSTRY CO., LTD.
• SUMITOMO CHEMICAL CO., LTD.
• SUMITOMO CHEMICAL ENGINEERING CO., LTD.
• SUMITOMO HEAVY INDUSTRIES, LTD.
• SUMITOMO METAL MINING PHILIPPINE HOLDINGS CORPORATION
• SUMITOMO OSAKA CEMENT CO., LTD.
• SWING ENGINEERING CORPORATION
• TAGANITO HPAL NICKEL CORPORATION
• TAIHEIYO CEMEMT CORPORATION
• TAIHEIYO ENGINEERING CORPORATION
• TAKADA CORPORATION
• TAKUMA CO., LTD.
• TANABE ENGINEERING CO., LTD.
• TAYCA CORPORATION
• TECHNO-UMG CO., LTD.
• TEC PROJECT SERVICE CORPORATION
• THAI PET RESIN CO.,LTD.
• TOA GOSEI CO., LTD.
• TOA OIL CO., LTD.
• TOHO TITANIUM CO., LTD.
• TOHOKU ELECTRIC POWER CO., INC.
• TOKYO ELECTRIC POWER COMPANY HOLDINGS, INC.
• TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
• TOSHIBA PLANT SYSTEMS & SERVICES CORPORATION
• TOYO ENGINEERING CORPORATION
• TSUKISHIMA HOLDINGS CO., LTD.
• TSUKISHIMA JFE AQUA SOLUTION CO., LTD.
• TSUKISHIMA KANKYO ENGINEERING LTD.
• TSUKISHIMA KIKAI CO., LTD.
• TSUKISHIMA J TECHNOLOGY MAINTENANCE SERVICE CO., LTD.
• UBE CORPORATION
• UBE ELASTOMER CO. LTD.
• UBE-MARUZEN POLYETHLENE CO,LTD.
• UNIMATEC CO., LTD.
• ZEON CHEMICALS (THAILAND) CO., LTD.
• ZEON CHEMICALS ASIA CO.,LTD.
• ZEON CHEMICALS SINGAPORE PTE.LTD.
• ZEON CORPORATION
• ZEON NORTH CO., LTD.