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China's Hanergy soars but doubts remain over its thin-film solar technology

Hanergy chief says the company is ready for a mass rollout of its products and that thin-film technology is already mature. But some experts say the firm's products are not efficient or cheap enough and are far from ready to take any major market share from conventional panels made with crystalline silicons.

Hong Kong

THE green energy potential of thin-film solar panels has propelled Li Hejun to the top of China's rich-list, but his Hanergy Holdings has yet to prove it can turn impressive laboratory research into commercially successful products.

Hanergy Thin Film Power, a Hong Kong-