... carbon materials.Specifications of 90%-95%:1. F·C:95%, V.M:1.0%(MAX),A:4.0%(MAX),MOI:1.0%(MAX),S:0 ... .5%(MAX),A:5.5%(MAX),MOI:1.0%(MAX),S:0.30%(MAX)3. F·C:92%, V. ... 0%(MAX),S:0.30%(MAX)4. F·C:90%, V.M:2.0%(MAX),A:8.0%(MAX),MOI:1.0%(MAX),S:0 ... & Steel,Maanshan Iron & Steel,Baotou Iron & Steel and Tangshan Iron & Steel etc.Exporting to many foreign countries in Europe,America,and Asia. carbon steel additive