第四届《感光材料》编委会会议于一九九三年七月七日至九日在河北省承德市召开,会议由《感光材料》新任主编、中国乐凯胶片公司第一胶片厂总工程师谢宜凤主持。参加会议的有来自中科院感光化学研究所、化学研究所、长春应用化学研究所、中国图片社,上海隆 The fourth meeting of the Editorial Board of “Photographic Materials” was held in Chengde, Hebei Province, from July 7 to July 9, 1993. The meeting was co-chaired by the newly chief editor of Photographic Materials, the first film factory of China Lucky Film Corporation Engineer Xie Yifeng presided over. Participants at the meeting came from Institute of Photographic Chemistry Chinese Academy of Sciences, Institute of Chemistry, Changchun Institute of Applied Chemistry, China’s photo agency,