We are supplying comprehensive raw materials of welding flux. The specs for ferromanganese shows as below: Mn (%): 75.0-85.0Si (% max): 1.5 P (% max): 0.03 S (% max): 0.03 C (% max): 1.0-8.0 Size: -60 mesh or according to customer's requirementPacking: according to customer's requirement producing area:China