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由国家建材局科技教育委员会、中国煤炭加工利用协会联合主办、双鸭山东方工业公司承办的“煤矸石、粉煤灰烧结空心砖新技术推广研讨会”,于1999年12月7日在北京召开。来自国家计委、国家经贸委、国家建材局、国家环保局、国家煤炭工业局以及各行业协会、省市机关墙改办、有关
The “New Technology Promotion Seminar for Gangue and Fly Ash Fired Hollow Bricks” co-sponsored by the National Building Materials Bureau Science and Technology Education Committee and the China Coal Processing and Utilization Association, and Shuangyashan Dongfang Industry Co., Ltd. was held in Beijing on December 7, 1999. From the State Planning Commission, the State Economic and Trade Commission, the State Bureau of Building Materials, the National Environmental Protection Agency, the State Coal Industry Bureau, and various industry associations, provincial and municipal government offices, and related