The Japan-based company raised its full-year guidance, citing a U.S. market turnaround and operational improvements.

The Japan-based company raised its full-year guidance, citing a U.S. market turnaround and operational improvements.

TOKYO, Aug 4 : Japan's top steelmaker Nippon Steel on Tuesday raised its full-year net profit forecast by 32 per cent to 290 billion yen ($1.84 billion), citing stronger earnings…