quartz plate zhuozhou xupurui lamps factory High visible range This is Jason zhuozhou xupurui lamps factoryquartz plate/sheetQuartz plate (sheet, target , flake , slice , tiles) is use for optical and vacuum instruments and light source . quartz sheet (plate, target, flake, slice, tiles)Used for optical and vacuum instruments and light source. The size as follows: 1. Square type100mmx100mmx( ...