全国铁路在华主席和党中央的亲切关怀下,运输生产蒸蒸日上,捷报频传,日装卸车数已超过历史最好水平。在大好形势下,铁道部从4月21～24日在长沙召开了“货车塑料瓦头初步技术鉴定会”。铁道部科技委、机辆局、工业局,全国20个铁路局、14个货车工厂、铁道部科学研究院和戚墅堰机车车辆工艺研究所以及上海溶剂厂、石井 Thanks to the cordial care of Chairman Hua and the party Central Committee of the National Railway, transport and production have been booming day by day. The number of daily loading / unloading trucks has surpassed the best record in history. In a good situation, the Ministry of Railways held the “Preliminary Technical Appraisal Meeting of Wagons on Plastic Wagons” from April 21 to April 24 in Changsha. Ministry of Railways Science and Technology Commission, the Bureau of vehicles, the Industrial Bureau, the National 20 Railway Administration, 14 truck factories, the Ministry of Railways Institute of Science and Technology and Qishuyan rolling stock Institute of Technology and Shanghai solvent plant, Ishii