“1990年全国液压气动密封技术交流会”于1990年10月19日到23日在山东省烟台市召开。到会代表有部局领导、协会理事长,经理,企业厂长,教授,专家及论文作者共112人。交流会共收到论文113篇,其中73篇进行了大会交流和专题交流。论文中50篇来自工矿企业,38篇来自高等院校,25篇来自各研究所。液压行业有81篇,气动22篇,关于密封件方面的论文也有10篇,受到到会代表的重视。专业交流分十大类:1)策略、科学管理。2)引 “The National Hydraulic and Pneumatic Sealing Technology Exchange Conference in 1990” was held in Yantai City, Shandong Province from October 19th to 23rd, 1990. The delegates attended the meeting with a total of 112 leaders of the bureau, leaders of the association, managers, managers of enterprises, professors, experts, and authors. The conference received a total of 113 papers, of which 73 had exchanges and thematic exchanges. Among the papers, 50 were from industrial and mining enterprises, 38 from universities and colleges, and 25 from various institutes. There are 81 in the hydraulics industry, 22 in pneumatics, and 10 papers in the field of seals, which are valued by delegates. Professional communication is divided into ten categories: 1) Strategy and scientific management. 2) cited