沈阳风动工具厂研制的D9和D4型捣固机,已于1977年5月23日至24日在沈阳风动工具厂召开的鉴定会议上进行了鉴定。参加这次鉴定会的单位有研究所、生产厂和用户,参加的人员有工人、技术人员和领导干部。这是一次三结合的产品鉴定会。这次会议是在全国工业学大庆会议胜利闭幕,掀起“工业学大庆”运动新高潮的大好形 The D9 and D4 tamping machines developed by Shenyang Wind Tools Co., Ltd. were identified on May 23 to 24, 1977 at the identification meeting held by Shenyang Wind Tools Factory. The units that participated in the appraisal meeting were institutes, production plants, and users. The participants were workers, technicians, and leading cadres. This is a three-in-one product appraisal meeting. The conference was successfully concluded at the National Daqing Conference on Industrial Science and set off a new upsurge in the “Daqing Industrial Science” campaign.