But executives remained cautious as higher prices will likely trigger makers to restart some idled capacity, creating a burst of supply that would damp prices and profits again.

• 但行业管理人士仍然持谨慎态度，因为价格上涨可能会促使制造商重新启动部分闲置产能，导致供应明显增加，从而可能再次压低产品价格和利润。