Yihui Casting selected quality ceramic as materials, combined with advanced ceramic processing workmanship, mainly used for platinum, gold, and other high temp alloy melting, high purity, anti-corrosion, anti strong acid and strong alcali . The main component is SiO2≥99.99%，and other materials(K2O、Na2O、Fe2O3) less than 0.10%, good hardness, compress resistance ≥70MPa,high thermal shock resistance, There is no crack eve after hundred sudden heat and sudden cold.
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