HMT is a professional supplier of 4H-SiC materials, offering both Conductive N-type and Semi-insulating SiC Boules. Our boules undergo double-side lapping and are available in thicknesses ranging from 10mm to 25mm. A full range of diameters, including 2-inch, 4-inch, 6-inch, and 8-inch, is available for your selection.