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

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

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

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

- Risho (Ricocel), Nikko Kasei (Nikopallet)

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

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