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中国内燃机工业协会副秘书长魏安力指出,在实施国四、国五的进程中,相关产业的保障体系建立得越早,排放标准升级工作开展的进度就会越快。在车用尿素行业,2013年底,中国内燃机工业协会组织编制了《柴油发动机氮氧化物还原剂尿素水溶液生产制造条件和产品质量监督管理办法》和《柴油发动机氮氧化物还原剂尿素水溶液生产制造条件和产品质量监督管理办法实施细则》,并于2014年11月3日正式出
Wei Anli, deputy secretary general of China’s Internal Combustion Engine Industry Association, pointed out that in the process of implementing the fourth and the fifth national policies, the guarantee system for related industries will be established earlier and the progress of emission standard escalation will be carried out progressively faster. In the automotive urea industry, by the end of 2013, China’s Internal Combustion Engine Industry Association organized the preparation of “Production and Quality Supervision and Management Measures for Urea Aqueous Solution of Diesel Engine NOx Oxidizer” and “Production Condition of Ammonia Nitrogen Reductant for Diesel Engine Aqueous Urea Solution And Product Quality Supervision and Management Implementation Rules ”, and in November 3, 2014 formally