Ballard Power oversold, a good time to buy.
$Ballard Power Systems Inc(BLDP.US$ Its RSI is close to 30 and also reaching lower level of Bollinger band.
![Ballard Power oversold, a good time to buy.](https://ussnsimg.moomoo.com/1613570893746-71778039-android-compress.jpg/bigmoo)
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