Takiron, Sumitomo (Sumipex), Sekisui (ESLON DC Plate), Mitsubishi Chemical (ACRYLITE, SHINKOLITE, HISHIPLATE), Kanase (Kanaselite), Daiyayouki, Pluskasei, Teijin, Taiwan brands, etc.

Polypenco(MC Nylon, Nylatron), Ube Industries(Ubesta), Toray Plastics Precision, NACks, Takiron, Toyama Light Material, Mitsuboshi Belting, Chubu Extron, etc.

Nikko Kasei (Lossna Board, Besthermo, Kallyte, Kalhon), Nichias (Neoark, Hemisul, Regisul), Ryoden Kasei (Miolex),

DIC, Teraoka Seisakusho, Arisawa Manufacturing, Dexerials, Nikkan Industries, Nitto Denko, Nittoshinko, 3M, Saxin, Tesa, etc.

Takiron, Sumitomo (Policaace), Sekisui (ESLON DC Plate), NACks, Mitsubishi Chemical (HISHIPLATE), Mitsubishi Gas Chemical (Iupilon), Toray Plastics Precision, Toyama Light Material, Daiyayouki, Kureha Extron, AGC (Carboglass), Teijin (Panlite), Daiwa Giken, Rochling (SUSTARIN), Ensinger (Tecanat), etc.

Daisho-Denshi (Magic Resin, Career), DIC, Mitsubishi Chemical (DIAFOIL, VINYFOIL, DIANIUM), Ube Industries (Upilex), Kaneka (Apical), Arisawa Manufacturing, Dexerials, Futamura Chemical, Nikkan Industries, Nitto Denko, Nittoshinko, Saxin, Sumitomo, Toray, Teijin, DuPont, etc.

Shinmeilite (large diameter, pipe), Nikko Kasei (Nikolyte), Sumitomo (Sumilite), Hitachi Chemical, Ryoden Kasei, Toyama Light Material, etc.

NACks, Sumitomo (Toughace), Takiron, Mitsubishi Chemical (HISHIPLATE), Mitsubishi Gas Chemical (Iupiace), Kasai Sangyo (Kapilon), Polypenco (Tivar), Mitsui Chemical Tohcello (Paulownia), Toray Plastics Precision, Toyama Light Material, Mitsuboshi Belting, Dainichi Can, Yasojima Proceed, Rochling (Polystone), Kureha Extron, Wavelock, Sankyo Kasei, Inoac, Daiwa Giken, etc.

Shinmeilite (large diameter, pipe), Nikko Kasei (Nikolyte), Risho (Rikolite), Futamura Chemical (Taikolite), Ryoden Kasei, Toyama Light Material, Taiwan brands, etc.

Takiron, Sumitomo (Sunloid petace), Polypenco (Ertalyte, Semitron), Kasai Sangyo (K-GPET), Toyama Light Material, Teijin (Teonex), Ensinger (Tecapet), etc.