Inner Mongolia Daqingshan Smelting Co., Ltd is a reliable ferrosilicon producer from China, with a output about 20, 000mt annually. The following spec can be supplied in a long term: Ferro silicon Si: 75% min or 72%min Al: 1.0%max, 1.5%max,2.0%max C: 0.15%max, 0.20%max, P: 0.04%max, S: 0.02% max, Size: 10-50mm 90% min or 50-100mm 90%min, (other size upon requested) Ferro silicon powder Size: 0-3mm, 3-10mm 90% min Silicon slag metal silicon content: 30% min, 40% min, size: 0-300mm silica fume Packing: in 1mt big bags Please feel free to contact us if you are interested.