... , M7,M35,M42,W9 We are China's largest high speed tool steel producer and leader of the Chinese Special Steel ... corperation as our second shareholder. Main products: High speed tool steel, PM high speed steel, high alloy tool steel, and other alloy steel. ... forward to cooperating with friends from all over the word in High speed tool steel industry.Tool steel product list:typesHeye gradeContrast ...