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由中国非金属矿工业总公司、咸阳非金属矿研究所、鸡西非金属矿工业公司、梨树硅灰石矿业公司和中国硅酸盐学会组成的赴苏联非金属矿技术考察团一行5人,于1990年6月7日至25日对苏联进行了考察。考察了全苏矿物公司、全苏非金属矿设计研究院、苏联科学院矿产综合开发研究所、科夫多尔采选联合企业、苏联非金属矿地质中心北方地
The delegation of 5 non-metallic mineral technology research missions to the Soviet Union, consisting of China Non-Metallic Mining Industry Corporation, Xianyang Institute of Non-metallic Minerals, Jixi Non-Metallic Mining Industry Corporation, Lishi Wollastonite Mining Company and China Silicate Society, The Soviet Union was inspected from June 7 to July 25, 1990. Inspected all Su mineral company, all the Soviet Union non-metallic mineral design and Research Institute, the Soviet Academy of Sciences Institute of mineral comprehensive development, Cobdu Dolhe mining enterprises, the Soviet Union non-metallic mineral geological center north