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High Quality Grinding Wheel flat type/depressed type steel,stainless steel,or stone grinding aluminium oxide or others Grinding Wheel:1)grinding wheel for metal (general use): Flat Type and Depressed Type. Materials: aluminium oxide.2)grinding wheel for stainless steel: Materials:WA(white aluminum oxide). Application:widely used in industries like Automotive,Shipbuilding,Machinery,Metallurgy etc. ...