Seiko's optical products generated sales of 6.742 billion yen (€45.0m-$56.7m)...

Seiko's optical products generated sales of 6.742 billion yen (€45.0m-$56.7m) in the 1st quarter ended June 30, or 5.4 percent less than in the same period a year ago, due to sluggish sales of single-vision low-index lenses to mass merchandisers in Japan. Back-surface progressive lenses continued to grow domestically and ...

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