These are used in Semi Conductor industry to produce semi conductor wafer applications.

For Production of high Quality wafers, starting materials are added to a heating to high temperatures and take out as single crystal, Quartz Glass is a best suitable material that is having the high purity and high temperature properties required for this process.

It has the advantage as,

Advantages of high purity, high temperature resistance with big size, good thermal insulation, economization on energy, quality stability etc.