TOKYO, March 18 : Japanese manufacturers' confidence improved to its highest level in over four years in March, buoyed by the chemicals and petroleum sectors and a recovery in the semiconductor market, the Reuters Tankan poll showed. However, concerns over the Middle East conflict, rising costs and sluggish Chinese demand cloud the outlook. The monthly poll, which tracks the Bank of Japan's closely watched tankan survey, showed the manufacturers' sentiment index rose to plus 18 in March, the

Tag-uri: Petrol