上海劳动电焊机厂,为了贯彻落实伟大领袖毛主席“备战、备荒、为人民。”的伟大战略方针,从老产品改革中挖潜力,对原被称为“老黄牛”的仿苏AB—500型焊机作了改型。仅用十九天时间就完成了样机的设计和试制任务。技术指标全部达到了原AB—500型焊机的规定。大大压缩了体积,节约了大量材料和工时。经初步考核,改型后的 In order to implement the great strategic principle of “preparing for war, preparing for famine and for the people” of Chairman Mao, Shanghai Labor Welder Factory has tapped its potential from the reform of the old products. In order to implement the great strategy of Chairman Mao, known as the “Old Ox”, the AB-500 Type welding machine made a modification. In just nineteen days to complete the prototype design and prototype mission. Technical indicators have all reached the original AB-500-type welder provisions. Greatly compressed volume, saving a lot of materials and working hours. After the initial assessment, after the modification