Graphite Crucible, Graphite Block, Graphite Mold manufacturer / supplier in China, offering Good Thermal Conductivity Graphite Crucible Foundry Cup Ceramic Crucible for Gold / Silver / Copper / Metal Melting / Casting, Refractoriness 1700º C Zirconia/Zro2 Ceramic Foam Filter for Higher-Quality Casting, Chemical Stability High Purity Graphite Crucible Quartz Crucible for Gold Melting Furnace and so on.