The oilstones produced by our company include brown corundum(A), white corundum(WA), black carborundum(C), green carborundum(GC)etc.
我公司生产的油石有棕刚玉（A）、白刚玉（WA）、黑碳化硅（C）、绿碳化硅（GC）等材质。
Corundum refractory material is an excellent lining material for carbon black reactors and can be used for a long time in the reducing atmosphere.
刚玉耐火材料是工业炭反应器优良的内衬材料，可在还原气氛中长期使用。
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