... are direct producer of Abrasive & Grinding Tools. Green silicon carbide, black silicon carbide , brown corundum and white corundum are our main ... # 120# 180# 240# 320# 400# 500#silicon carbide sharpening stone, oil stonesilicon carbide, china clay, feldspar and dextrinIngredients:Uses: sharpen fine ... precision cutting toolsProduction process: Mixture forming dry firing Silicon Carbide Oil Stone