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为满足我国社会主义经济建设和国防建设的需要,增加工程机械的新品种,郑州工程机械制造厂在天津工程机械研究所的切密配合下,接受了一机部下达的7～9米~3液压自行式铲运机试制任务。参加设计、试制的厂、所职工,在两单位的党委领导下,高举“鞍钢宪法”的旗帜,坚持“独立自主,自力更生”和“洋为中用”的方针,群策群力,反复实践,于1973年9月制出两台样机,经过了500小时作业试验之后,1974年2月通过了厂级鉴定。随后,工厂又进行了500小时的工业
In order to meet the needs of China’s socialist economic construction and national defense construction and increase new varieties of construction machinery, Zhengzhou Construction Machinery Manufacturing Factory, under the close cooperation of the Tianjin Institute of Construction Machinery, accepts a 7 to 9 meter~3 Hydraulic self-propelled scraper trial production task. Participating in the design and trial production of plants and employees, under the leadership of the Party committee of the two units, holding high the banner of the “Anshan Iron and Steel Constitution”, adhering to the principles of “independence, self-reliance, and self-reliance” and “foreign use for foreigners”, working together and repeatedly, in 1973 In September, two prototypes were produced. After a 500-hour operation test, a factory-level appraisal was passed in February 1974. Afterwards, the factory carried out another 500 hours of industrial