天津市电工合金厂在毛主席的自力更生方针指导下,通过无产阶级文化大革命的锻炼,开始甩开洋拐棍走自己工业发展道路。在1967年初对Ag—Fe触头进行了研制工作,并进行了多次实际分析和研究。在69年2月全国鉴定会上,该产品在额定电流40A, Under the guidance of Chairman Mao’s principle of self-reliance, Tianjin Electrotechnical Alloy Factory started to throw off its foreign trade sticks and take the road of industrial development through the training of the Great Proletarian Cultural Revolution. The Ag-Fe contact was developed in early 1967 and many actual analyzes and studies were conducted. In February 69 national appraisal meeting, the product rated current 40A,