Aichi Tire Industry, Arai Seisakusho, Asahi Rubber, Bando Chemical Industries, Bridgestone, Daiki Enginering, Daicel Chemical Industries, Daiso, Daiwabo, Fuji Latex, Fukoku Rubber, Gyousei Industrial Rubber Coating & Soaking, Gomunoinaki, Higashi Kagaku, Inaba Rubber, Japan Rubber Manufacturers Association, JSR,  Kato Sansho, Katsura Roller Mfg., KEF, Kinugawa Rubber Industrial, Kohshin Rubber, Kokoku Intech, Kosuge, Kuraray, Kureha Elastomer, Kyowa, Marugo, Marugo Rubber, Meiji Flow Systems, Meiji Rubber & Chemical, Mikasa, Molten, Nagase Kenko, Nagayanagi, Nariwa Rubber, Nichirin, Nippon Polyurethane Industry, Nisshin Rubber, Nitta, Ohji Rubber & Chemicals, Sagami Rubber Industries, Sakura Rubber, Sanko Rubber Industry, Sekiguchi Rubber, Showa Rubber, Society of Rubber Industry, Japan, Sumitomo Chemical, Sumitomo Rubber Group, Tigers Polymer, Tokai Rubber Industries, Toyo Quality One, Toyo Tires, Toyoda Gosei, Ube Industries, Ueshima, Yamauchi, Yokohama Rubber, Yoshino Rubber Industrial, Zeon