News Archive

July 2010
Toyokuni Electric Cable Co., Ltd. and Sumiden High Precision Co., Ltd. have merged into a new company, SEI Optifrontier Co., Ltd. and it has started business.

Toyokuni Electric Cable Co., Ltd. and Sumiden High Precision Co., Ltd. have merged into a new company, SEI Optifrontier Co., Ltd. and it has started business.

2010年

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