Ming Yang made a net profit of 185.5m yuan ($29.9m) in the first quarter of 2014, well up on the 4.5m yuan seen in the same three months last year – though that was swollen by a one-off 124m yuan gain on disposal of a subsidiary.

The turbine maker boosted its gross margin to 15.7% from  a year-ago 11.1%, while sales soared by 52% to 1.22bn