List of Donors

• ASAHI CARBON CO., LTD.
• Bando Chemical Industries, Ltd.
• Bridgestone Corporation
• Cabot Corporation
• Chemicals Evaluation and Research Institute, Japan
• CHUSEI RUBBER CO., LTD.
• DAIDO RUBBER CO.,LTD.
• DUMBBELL CO., LTD.
• ENEOS Materials Corporation
• ENEOS Materials Trading Co., Ltd.
• FURUKAWA ELECTRIC CO., LTD.
• Gates Unitta Asia Company
• GomunoInaki Co., Ltd.
• HEISHIN TECHNO WERKE Ltd.
• Hokusei Rubber Industry Co., Ltd.
• HOTTY POLYMER CO., LTD.
• INOAC CORPORATION
• IREC Co., Ltd.
• JEX Co., Ltd.
• KATO SANSHO CO., LTD.
• Katsura Roller Mfg. Co., Ltd.
• KINUGAWA RUBBER INDUSTRIAL CO., LTD.
• KINYOSHA CO., LTD.
• Kokoku Intech Co., Ltd.
• KOSUGE Corporation
• K-THREE CO.,LTD
• Kuraray Co., Ltd.
• KURASHIKI KAKO CO., LTD.
• KYOWA LIMITED
• Mitsuboshi Belting Ltd.
• Mitsui Chemicals, Inc.
• NAIGAI RUBBER INDUSTRY CO., LTD.
• Nichibei Rubber Co., Ltd.
• NICHIRIN CO.,LTD.
• NIPPON STEEL Chemical & Material Co., Ltd.
• NISHIKAWA RUBBER CO., LTD.
• NITTA CORPORATION
• NOK CORPORATION
• OHJI RUBBER & CHEMICALS CO., LTD. 
• OSAKA SODA CO., LTD.
• Otsuka Chemical Co., Ltd.
• OUCHI SHINKO CHEMICAL INDUSTRIAL CO., LTD.
• PYRAMID CORPORATION
• Sanyo Trading Co., Ltd.
• Seibu Polymer Corporation
• Seiko Chemical Co., Ltd.
• SHIMADZU CORPORATION
• Shin-Etsu Chemical Co., Ltd.
• SHINICHI KATO OFFICE CO., LTD.
• Shiraishi Calcium Kaisha, Ltd.
• SHIRAISHI CENTRAL LABORATORIES CO.,LTD
• Shiraishi Kogyo Kaisha, Ltd.
• Sumitomo Riko Company Limited
• SUMITOMO RUBBER INDUSTRIES, LTD.
• SUN-ESU RUBBER INDUSTRY INC.
• TAKEHARA RUBBER co., ltd.
• TENMA FACTICE MFG.CO.,LTD.
• TOKAI CARBON CO., LTD.
• TOKAI KOGYO CO.,LTD.
• TOKYO ZAIRYO CO., LTD.
• Toshin Rubber Chemical Co., Ltd.
• TOSOH SILICA CORPORATION
• Toyo Tire Corporation
• TOYODA GOSEI CO.,LTD.
• TOYOTA MOTOR CORPORATION
• Tsurumi Chemical Industry Co., Ltd.
• UBE Elastomer Co. Ltd.
• Ueshima Seisakusho Co., Ltd.
• The Yokohama Rubber Co., Ltd.
• Yoshino Rubber Industrial Co., LTD.
• Zeon Corporation
• Zeon Polymix Inc.