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。