- Asahi Chemical Co.,Ltd
- Kao Corporation
- Hanil Chemical Ind. Co.,Ltd.
- Kansai Paint Co.,Ltd.
- Kurita Water Industries, Ltd.
- Koei Chemical Co.,Ltd.
- Koei Perstorp Co.,Ltd.
- Sanyo Chemical Industries, Ltd.
- Sumika Color Co.,Ltd.
- Sumika Bayer Urethane Co.,Ltd.
- Sumitomo Chemical Co.,Ltd.
- Sumitomo Bakelite Co.,Ltd.
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- Taoka Chemical Co.,Ltd.
- Chugoku Marine Paints, Ltd.
- Tayca Corporation
- DIC Corporation
- Nissen Polytec Corporation
- Nippon A&L Inc.
- Nippon Shokubai Co.,Ltd.
- Nihon Parkerizing Co.,Ltd.
- Neven Co.,Ltd.
- Nobukawa Co.,Ltd.
- HakusuiTech Co.,Ltd.
- Songwon Industrial Co.,Ltd.
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