DongQi-Emei Semiconductor Material Factory & Institute DongQi Emei Semiconductor Material Factory & Institute High Pure Metals Division, a pionner reserch base and the biggest producing center for high pure elements and compound materials in china. It was established in 1964. This institute is the most complete in technology and variety of pure elements. At the present time it is equipped with advanced Glow Discharge Mass Spectrograph(GD-MS) and purify equipments in a new factory building . It is the only one which has a complete Analysis & test Center and environmental protection installation. Its first-stage of high pure material industrial area with large-scale production capacity, was built in ***** aim is to satisfy customersâ?? different requirements. Productsï¼?99.999%-99.99999%ï¼?ï¼? High pure materials: Te. Cd. ***** Sb. P. Bi. Pb. Sn. Ga . Cu. Se. Zn. Au. Ag. Sâ?¦ High pure compounds: CdTe. Sb2O3. Bi2O3. Ga2O3 â?¦ Processed high pure materials: Sheets. Foils. Bars. Wires. Granules. Powdersâ?¦