... , Yantai Hejing Ceramic New Materials Co., Ltd. is a high-tech enterprises dedicated to the research, development, manufacture, sales and ... chain.Nuclear Industry Yantai Tongxing Industry Co., Ltd. is a provincial high-tech enterprise of “transfer of military technology ... production bases under the company.Fused silica ceramic crucible, a leading product of Yantai Hejing Ceramic Materials Co., Ltd., ...