Asian stocks swung between gains and losses as investors await a U.S. Federal Reserve’s policy announcement and after a Chinese newspaper commentary said massive stimulus measures would be “detrimental” to the nation’s sustainable growth.

Nikkei 225 8,995.15 +35.19 +0.39%

S&P/ASX 200 4,339.4 -21.85 -0.50%

Shanghai Composite 2,125.68 -0.87 -0.04%

James Hardie Industries SE, a building-materials supplier that gets 67 percent of sales from the U.S. rose 1.5 percent.

Bank of Communications Co. slid 1.4 percent in Hong Kong.

Kansai Electric Power Co. and Kyushu Electric Power Co. advanced on a report the utilities are considering a rate increase.

TDK Corp., a battery supplier to Apple Inc., climbed 4.4 percent in Tokyo after the iPhone 5 was unveiled.