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High Hardness Cast Steel Grit Gh12 2.0mm for Surface Cleaning. High Hardness GH Grade: Microhardness reaches 60-64HRC for superior surface cleaning performance. 30+ Years Manufacturing: Specialized in metal abrasives production for over 30 years with 4 production lines. International Certifications: Passed ISO9001, ISO45001, ISO14001, SAE, and GB/T standards. OEM/ODM Customization: Supports full customization, minor customization, and flexible design options. 100% Quality Inspection: Strict visual and function inspection for all finished products before shipping. Competitive Pricing: Direct manufacturer pricing with MOQ of 5 Tons and flexible payment terms.