关于联合召开全国第三届覆膜砂技术交流及贸易洽谈会的预通知各有关单位、专家学者及科技人员：为提高我国覆膜砂技术水平，推广覆膜砂行业的新上艺、新材料及新设备．以适应我国“九五”规划中重点发展汽车行业的需要，全国铸造机械委员会覆膜砂专题研究组，济南圣泉集团股份 Relevant units, experts, scholars and technicians were pre-informed on the joint holding of the 3 rd National Conference on the Technology Exchanges and Trade in Coated Sand: In order to improve the technological level of coated coals in China and promote the new Shangyi and new materials And new equipment. In order to meet the needs of China’s “Nine Five” plan to focus on the development of the automotive industry, the National Foundry Mechanical Committee coated sand research group, Jinan Quan Group shares