青岛市科委受山东省科委委托于一九七七年九月二十二日至二十六日,在青岛市主持召开了“铸造用冷芯盒CHG—1型常温固化树脂”技术鉴定会。全国进行自硬冷芯盒制芯工艺试验的四个地区26个单位的43名代表参加了会议。与会代表认真听取并讨论了“铸造用冷芯盒CHG—1型树脂”的技术总结及应用报告,参观了现场,最后通过了鉴定报告。“铸造用冷芯盒CHG—1型常 Qingdao Science and Technology Commission commissioned by the Shandong Provincial Science and Technology Commission on September 22, 2007 to 26, presided over the Qingdao City, held a “casting cold box CHG-1 type room temperature curing resin,” technical appraisal meeting. Forty-three representatives from 26 units in four regions of the country who conducted the self-hardening cold box core making process test attended the meeting. Participants listened attentively and discussed the technical summary and application report of “chilled core box casting CHG-1 resin”, visited the site and finally passed the appraisal report. Casting cold box CHG-1 type often