*A級熔融石英砂99.95%≤SiO2≤99.98%、Fe≤32ppb以內

*AB級熔融石英砂99.85≤SiO2≤99.86%、Fe≤0.02%以內

*C級熔融石英砂99.4%≤SiO2≤99.5%、Fe≤0.05%以內