Place of Origin: Dalian,China (Mainland) Brand Name: super star Model Number: 168 Type: Silica Powder,Silica Quartz Application: Glass Grade: Silica Oxide Regular Fine -250 SiO2 Content (%): 99.6-99.8%,99.6-99.8 Fe2O3 Content (%): 50ppm,Less than or equal to 0.005 Al2O3 Content (%):