一 在那个狂热的６０年代中期，于常友毕业于山东工业大学。他怀着“建设边疆、报效祖国”的远大志向，自愿申请到条件最艰苦，祖国最需要的地方去工作。他分配到吉林省通化无线电厂后；积极投身技术革新，５年时间开发了１０多项科技新产品。７０年代初，他调到冶金部自动化研 In the frenzy of the mid-1960s, Yu Changyou graduated from Shandong University of Technology. With the lofty aspirations of “building a frontier and serving the motherland,” he voluntarily applied to work where the conditions are most difficult and where the motherland needs most. After he was assigned to Tonghua Radio Factory in Jilin Province, he actively participated in technological innovation and developed more than 10 new technology products in 5 years. In the early 1970s, he was transferred to the Ministry of Metallurgical Institute of Automation.