Graphite Crucible, Graphite Block, Graphite Mold manufacturer / supplier in China, offering Custom Porosity 80-90 Zirconia Ceramic Foam Filter for Removing Inclusions From Steel Liquid, Zirconia Ceramic Foam Filter for Molten Unalloyed/ Low Alloyed/ Stainless Casting, High Temperature Resistance Zirconia Ceramic Foam Filter for Provide Molten Metal Laminar Flow and so on.