Cunningly hidden among mountains of colored roses and gardening tools, Hanergy Group's stand at the recent Hortiflorexpo in Shanghai also had its very latest solar-power technology on show.

The display, by the biggest private thin-film solar energy producer in China, was all part of its efforts to help the country's agriculture industry to become greener.

Visitors gathered around one model in particular, the three-meter-long by two-meter-high, ultra-thin and lightweight solar panel, which can be easily installed on the roofs of agricultural greenhouses, said company officials.