Niterra
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Noritake
Ibiden
Asahi Kasei
Sumitomo Chemical
Sumitomo Mitsui Banking Corporation
Tokyo Electron
Advantest
Sumitomo Electric Industries
AGC Inc.
Tokyo Electric Power Company
GS Yuasa
Tokyo Gas
Company
ngk.co.jp
NGK Insulators is a Japanese ceramics company. It primarily produces insulators but also produces other products, especially ceramic products. Wikipedia
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