... , 40, 50 PPi, etc 4Size: 380x380mm408x408 Ceramic Filter Plate Ceramic foam filters are made from ceramic corundum with excellent thermal quench, thermal conductivity and thermal ... than 300 sets of same-level hot top casting equipment with a casting rate in excess of 95 per cent, and ... ., Ltd7,Wujiang Longma Aluminum Co., Ltd8,Interthai Manufacturing Co., Ltd Ceramic Filter Plate