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Electric Porcelain Refractory Ceramics Sic Beams. Low Porosity: Porosity is less than 0.1%, ensuring dense and durable structure. Corrosion and Wear Resistance: High hardness (Mohs 9.15) with excellent acid-base and oxidation resistance. No Deformation: No bending deformation under high temperatures, ensuring long service life. ISO 9001 Certified: Manufactured by a company with ISO9001 quality system certification. OEM/ODM Support: Supports production according to samples or technical drawings with custom molds.