... 3.surface: polished 4.shape:sauqre,round,rectangler and arch et 1.size:300mm*200mm*8mm 2.working temperature: ... 2012F 3.surface: polished4.shape:sauqre,round,rectangler and arch etTransparent Quartz glass plateHeat resistant temperature:1200 degree CThe ... ,round quartz plate,rectangular quartz plate,quartz panelUsed for window material,mask substrate or heat insulation,optics,electronics,medical ...