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北京市规定,107胶、镀锌水管等12种落后建材今后都不准在北京新建工程及各种维修工程中使用。据了解,1998年北京市开始对石油沥青纸胎
According to Beijing regulations, 12 backward materials, such as 107 glue and galvanized water pipes, will not be allowed to be used in new projects and various maintenance projects in Beijing in the future. It is understood that in 1998, Beijing began to