Solar is incredibly pressured downwards right now so if you buy, know that all these companies are down big over the last 2 months. It's a combination of excess inventory, Europe backing off incentives due to the financial turmoil and what analysts see as forecasts that need to be brought down. Governments are very interested to support their companies when solar achieves grid parity and there is a huge ramp up in production. Solar will see a hockey stick effect at some point. You want to be into the solar play ONLY if you believe in this story.
Bought FSLR close to market lows in the low 60's. It is an excellent buy at these prices. These guys have the most predictable earnings due to the large utility projects and have some of the best margins.
TSL is the only other stocks I'd recommend from the China angle. China stocks count on Europe sales which are very low right now. Expect it to survive a harsh climate in the short term.
I expect to see a few more solar companies to go bankrupt. So buy low cost producers with enough money on their balance sheet to avoid this situation.