Certified quality
ISO 9001
- Zeon Europe GmbH, Düsseldorf, Germany (1.4 MiB)
- Zeon Chemicals Yonezawa Co., Ltd., Yonezawa-Shi, Japan (1.1 MiB)
- Optes Inc. Hokuriku Plant, Toyama, Japan (359.4 KiB)
- Zeon Chemicals L.P., Louisville, United States (702.5 KiB)
- Zeon Chemicals Singapore Pte. Ltd., Singapore (115.3 KiB)
- Toa Resin Corporation Limited, Hsinchu Hsien, Taiwan (279.9 KiB)
- Zeon Chemicals (Thailand) Co., Ltd., Rayong, Thailand (459.5 KiB)
- Tohpe Corporation (453.9 KiB)
ISO 9001 Zeon Corporation are available upon request.
ISO 14001
- Optes Inc. Hokuriku Plant, Toyama, Japan (530.0 KiB)
- Zeon Chemicals Yonezawa Co., Ltd., Yonezawa-Shi, Japan (1.1 MiB)
- Zeon Corporation, Kawasaki Plant, Kanagawa, Japan (390.7 KiB)
- Zeon Corporation, Mizushima Plant, Okayama, Japan (841.4 KiB)
- Zeon Corporation, Takaoka Plant, Toyama, Japan (491.8 KiB)
- Zeon Corporation, Tokuyama Plant, Yamaguchi, Japan (617.0 KiB)
- Zeon Chemicals Singapore Pte. Ltd., Singapore (316.6 KiB)
- Zeon Chemicals (Thailand) Co., Ltd., Rayong, Thailand (447.1 KiB)
- Zeon Chemicals L.P., Louisville, United States (2.2 MiB)

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