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总公司规划计划局于1997年11月下旬在河南信阳召开了自锁紧固件专题工作会,来自总公司有关单位的20多位专家、代表参加了会议。会议首先学习了QJ2998—97《航天产品用自锁紧固件系列型谱》,并就在航天
The head office planning and planning bureau held a workshop on self-locking fasteners in Xinyang, Henan Province in late November 1997. More than 20 experts and representatives from relevant units of the head office attended the meeting. The meeting first learned QJ2998-97 “Self-locking Fastener Series Spectra for Aerospace Products”