MASSTECH

Refractory construction materials not of metal, having a high siliceous mineral base of pyrophyllite, including high temperature refractory materials not of metal; high temperature cement; refractory fire brick not of metal; refractory fire brick mortar for monolithic sections; refractory furnace lining not of metal; refractory bricks not of metal for foundry ladle lining; refractory concrete; car tops not of metal, namely, refractory blocks not of metal that are used in the construction of high temperature tunnel and shuttle kiln cars; high-temperature refractory compounds not of metal, namely, refractory blocks not of metal that support a load of ware while resisting the firing temperature of kiln service