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¡¡¡¡Department of International Cooperation£¬ Science and Technology of Ministry of Water Resources£¬ P. R. China has the mandate of managing the formulation and revision of water technology standards in China.¡¡¡¡Translation of this standard from Chinese into English is organized by Department of International Cooperation£¬ Science and Technology of Ministry of Water Resources£¬ P.R China in accordance with due procedures and regulations applicable in China.¡¡¡¡The English version of this standard is identical to its Chinese original SL 541-2011 Concrete Mixers for Building Water and Hydroporver Project£¬ which was formulated and revised under the auspices of Department of International Cooperation£¬ Science and Technology of Ministry of Water Resources£¬ P. R China.¡¡¡¡Translation of this standard is undertaken by Standard and Quality Control Research Institute£¬ Ministry of Water Resources.¡¡¡¡Translation task force includes ZHENG Yu£¬ ZENG Shencong£¬ CHENG Meng£¬ GU Xiaowei£¬ LIU Deyou£¬ ZHANG Jin-hong£¬ FANG Yong£¬ MEI Huafeng£¬ JIE Jian'an£¬ WU Yanming£¬ ZHOU Qi£¬ HUANG Xuelin£¬ LIU Xian£¬ ZHANG Lei£¬ JIANG Chao£¬ XIA Peng£¬ YANG Yan£¬ and LI Fapeng. This standard is reviewed by CHENG Xialei£¬ QIAO Shishan£¬ YE Bin£¬ SHAO Yunxiu£¬ and SONG Renguo.