Seiko has reported a downturn in its optical products business for the first half ended Sept. 30, with net sales down by 10 percent to ¥12.6 billion (€97.0m-$145.8m). The operating loss for the segment was ¥0.3 billion (€2.3m-$3.5m), a worsening from the zero operating income reported for the same period ...
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