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Yingli Green Energy says its wholly owned subsidiary Tianjin Yingli New Energy Resources has achieved "significant progress" in multicrystalline ingot casting.

In July 2012, Tianjin Yingli entered into a partnership agreement with Zhejiang Jingsheng Mechanical & Electrical Co. Ltd. to develop high-efficiency multicrystalline ingot casting technology based on gas refrigeration. Through joint efforts of both parties, Tianjin Yingli has successfully upgraded its furnaces and improved the quality of its ingots.

According to experimental results, the best average conversion efficiency of cells using wafers from one of the improved multicrystalline ingots reached 17.75%.

"The improved technology will allow us to enhance our competitiveness through reduced consumption of energy and raw materials and improved yield rate," notes Liansheng Miao, chairman and CEO at Yingli Green Energy.



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