Profit attributable to owners of the Japanese company fell by 21.4 percent to ¥4.4 billion (€27.1m) for the six months ended Sept. 30. H1 operating income also declined by 21 percent to ¥5.6 billion (€34.7m) despite a 15.2 percent year-over-year improvement in net sales to ¥57.7 billion (€356.5m). Yonex is ...