1.Quartz glass ceramics is a new type high purity and high temperature-proof quartz glass material. Clear Quartz Mearsuring Cylinder Quartz glass ceramics is a new type high purity and high temperature-proof quartzglass material, the strong points are:low thermal conductivity,small expansioncoefficient,high temperature proof,excellent thermo stability and cost lowerthan other quartz glass.It has been widely used as long nozzle and immersion nozzlebrick for the continuously flood steel,flood gate brick and flood gate brickand flood channel for the float glass production, material bowl and material tubefor the ware glass kiln,crucible for melting special glass, quartz glassceramics rollers for the horizontal glass toughened furnace, oxygen furnace brickfor aluminium production in the field of metallurgy,chemical industry, buildingmaterial, national defense and science research