Black Silicon Carbide Black Black Silicon Carbide Black Silicon Carbide for Coating. High Hardness: Knoop hardness reaches 3100-3280 kg/mm2 for superior grinding performance. Versatile Applications: Ideal for sand blasting, polishing, resin bonding, and manufacturing refractory products. Customizable Packaging: Package can be customized to meet specific customer needs. Free Samples Available: 0.5-1kg samples provided free of charge, freight collected by buyer. High Purity Options: Offers 99.999% purity silica sand and high-tech spherical silica powder. OEM Support: Full OEM customized support available for branding and specifications. Global Reach: Products serve users in over 50 countries with 12 categories of materials. Standard Compliance: Production meets JIS, ISO, GB, and Fepa international standards.