一机部农机局委托山西省机械局,于五月中在长治液压元件厂召开了“伸缩式套筒液压缸及快速自封接头鉴定会”。有关制造、使用、科研和院校等四十多个单位,七十余名代表参加了鉴定会。与会代表认真学习了毛主席关于加强无产阶级专政的理论,听取了设计、试制和试验工作的汇报,观看了自卸挂车的表演和样品的台架试验。会上分别对伸缩式套筒液压缸和快速自封接头,这两种产品的技术文件和图纸资料进行审查,抽查了样品,验证了试验报告。代表们一致认为,由长治液压元件厂和一机部机 A machinery department commissioned the Agricultural Machinery Bureau of Shanxi Province Bureau of Machinery, in mid-May held in Changzhi Hydraulic Components Factory “retractable sleeve hydraulic cylinder and quick self-sealing connector identification will ”. More than 40 units related to manufacturing, use, scientific research and institutions attended the conference. More than 70 delegates attended the conference. The delegates carefully studied Chairman Mao’s theory on strengthening the dictatorship of the proletariat, listened to the reports on design, trial production and experimental work, and watched the dump truck’s performance and sample bench tests. At the meeting were retractable sleeve hydraulic cylinder and quick self-sealing joints, the two products of technical documents and drawings to review, sample checks to verify the test report. Delegates agreed that Changzhi hydraulic components factory and a machine unit