... density: 20, 30, 40, 50 PPi, etc 4Size: 380x380mm408x408 Ceramic Filter Plate Ceramic foam filters are made from ceramic corundum with ... .Size: 380x380mm, 408x408mm, 435x435mm, etc.Type of tap hole cones: large, medium, small. Tap hole cones are temperature-resistant silicate fiber ... and casting equipment is not only being used by many large companies in China, but we have also exported to Russia ...