Nikkei set to open lower, resistance at 9,700

TOKYO, Feb 28 (Reuters) - Japan's Nikkei share average is expected to edge down on Tuesday after it approached a key selling level at 9,700 and investors took profits in sectors that have buoyed this month's rally. Market players said the Nikkei was likely to trade between 9,550 and 9,650 on Tuesday after Nikkei futures in Chicago closed at 9,590, down 30 points or 0.3 percent from the Osaka close of 9,620. Kenichi Hirano, operating officer of Tachibana Securities, said the benchmark w