Long

cn50是上证50类似，历史水平震荡，局部分析可以的上边界支撑位做多

下跌通道上涨突破上边界回踩继续上涨，
局部下跌通道
从最上面一段连续上涨开始，上下上下来回震荡，还分层两个区间

trade1638

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