... industry Zr2O3:33%,36%,41% Common and irregular shape Glass Furnace Fused Cast AZS blocks Zibo Shunzhou Refractory Co.,ltd is ... void, it is often used in the upper structure of furnace and the interface parts which touch molten glass. ZWS while ... bottom, and of the block that used for sidewalls. Glass Furnace Fused Cast AZS blocksItem ProductAZS-41AZS-36AZS-33ZrO2(%)≥40.0 ...