Chinese innovative drug makers shoot for the moon, producing lots of volatility for investors betting on big returns one day

Chinese biotechnology companies that show promise but have yet to turn a profit are not for faint-hearted investors. Their share prices can be extremely volatile.Take Shanghai-based diabetes drug developer Hua Medicine. Its share price plunged by 40 per cent over three days recently after interim clinical trial results for its diabetes drug disappointed investors. Then it shot up 30 per cent over