... , 40, 50 PPi, etc 4Size: 380x380mm408x408 Ceramic Filter Plate Ceramic foam filters are made from ceramic corundum with excellent thermal quench, thermal conductivity ... : large, medium, small. Tap hole cones are temperature-resistant silicate fiber products used to block outlets of molten aluminum in all ... ., Ltd7,Wujiang Longma Aluminum Co., Ltd8,Interthai Manufacturing Co., Ltd Ceramic Filter Plate