Produced from natural quartz sand and mullite using a composite process. These saggars offer heat resistance, high density, corrosion resistance, a smooth non-shedding surface and long service life. Cost efficiency and good material compatibility make them one of the most widely used saggar types in traditional ceramics.

Suitable for medium-temperature firing (1250~1300℃) of corundum, zirconia-corundum, traditional ceramics and architectural ceramics.