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　　超級白剛玉是選用低鈉含量氧化鋁粉，并以獨(dú)特工藝在冶煉過程中進(jìn)一步除鈉，通過精密的冶煉工藝控制，使晶體生長完好無缺，硬度高，強(qiáng)度好，尤其適用于高檔陶瓷砂輪。
　　Super white corundum is the choice of low sodium content alumina powder, and with a unique process in the smelting process to further remove sodium, through precision smelting process control, make crystal growth intact, high hardness, good strength, especially suitable for high-grade ceramic grinding wheel.