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"China's role here is preponderant in photovoltaics. They really are the ones who set the pace in technology, the price of the panels and providing the panels," Persello said.

"Confronting the growing trend toward unilateralism and protectionism, developing third-party markets will not only conform to mutual interests but also benefit the global economy," said Li Yong, vice-chair of the expert committee at the China Association of International Trade.

"Cutting capacity has (helped boost) steel demand," Chen said. "But without a strong need for steel, strict environmental protection policies cannot account for the price rise."

"China will continue to deepen reform and opening-up, and further relax market access," Li said.

"China should stick to its established goal of further opening-up in a timely manner," he said, adding that a higher level of opening-up will effectively promote trade and investment and facilitate further economic integration between the world's two largest economies.