... Fiber based of Carbon fiber board, rigid graphite board, graphite felt, graphite insulation cylinders, and carbon-carbon composites ( ... Semiconductor, Solar Ingots, Specialist Castings, Metal Composites, Crystal Growing, Hard Metal Sintering, and the Heat Treat Sectors. ... High Pressure Sintering Industry:Heat Insulation for Hard Metal Sintering, Non Oxide Ceramics, Tungsten Carbide manufacturingVacuum ...