在紧跟英明领袖华主席为首的党中央抓纲治国,大学《毛泽东选集》第五卷,大批“四人帮”,大干社会主义的高潮中,于一九七七年四月十七日至二十三日,由北京钢铁研究院主持,在昆明钢铁厂召开了全国钢的脱碳层厚度显微测定法标准修订会议。十五个兄弟单位的三十三名代表参加了这次会议。 In the climax of the CPC Central Committee led by Chairman Hua, the wise leader, and the culmination of the fifth volume of the “Selected Works of Mao Tse Tung,” the “Gang of Four” and a large number of " On the 13th, presided over by the Beijing Institute of Iron and Steel, held in Kunming Iron and Steel Plant decarbonization thickness of the steel microscopy standards revision meeting. Thirty-three representatives from 15 fraternal units attended the meeting.