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1986年12月18～19日,河南省机械电子工业厅在郑州主持召开了SZF6—520型六层粉料直线振动筛鉴定会,来自全国各地30个单位近50名代表参加了会议。 SZF6—520型六层粉料直线筛是中国矿业学院和新乡滨河振动电机工业公司总装厂共同研制
December 18-19, 1986, Henan Machinery Electronics Industry Office hosted a SZF6-520 six-layer powder linear vibrating screen appraisal meeting in Zhengzhou. Nearly 50 delegates from 30 units across the country attended the meeting. SZF6-520 six-layer powder linear sieve is jointly developed by China Mining Institute and Xinxiang Binhe Vibration Motor Industrial Company’s assembly plant