ferro silicon

75#:Si:75%min;Al:1.5%max;C:0.20%max;S:0.03%max;P:0.04%max;
72#:Si:72%min;Al:2.0%max;C:0.20%max;S:0.03%max;P:0.04%max;
70#:Si:70%min;Al:2.0%max;C:0.20%max;S:0.03%max;P:0.04%max;
Size in Lump: 10-50mm, 50-100mm, 10-100mm, 50-150mm, 90%min, or at customer’s option
Packing: In 1MT big bag，or at customer’s option;