JKS has a much higher relative short volume than Sol and has support at $20. SOL has broken through any and all resistance and the short volume is comparatively low for the sector. That's why it is not recovering - if there are no shorts covering their bets (or value buyers, which there are none) the computers will push to $0 if they can unless someone stops the trade.
This has fallen by more than 50% since March 31st, and it will not stop before the price has reached $4.50. A lot of that has to do with the misleading statements regarding pricing at the Q1 conference call, which triggered the downward spiral and scared off investors. Senior management in this company should be held accountable for that.