... high thermal shock resistance,large specific surface area Heat Transfer Media for RTO is the patented product in our company. ... of HRC, such as different kinds of heating furnaces, hot-blast furnace, heat-treatment furnace, cracked stove, roaster, melting furnace, ... .819150X1504X4HEXAGON3420153.8X153.8100X100SQUARE121120X12038X38SQUARE2.5 convexity honeycomb ceramic heat transfer media for RTO