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In promoting economic growth, one of the major targets of China's 11th Five-Year Plan is to constantly increase the efficiency of resource utilization and especially to reduce the energy intensity for per unit of GDP.

Continuous breakthroughs have been made in the conversion rate of polycrystalline silicon and the thinning technology of silicon wafers.

Electric energy is a secondary energy with high quality converted from various primary energies.

Currently, the financial crisis sweeping across the globe has made a strong impact on the world economy.