Mysteel铁合金产量3月环比同比4月预测样本占比硅锰（万吨）84.410.23%12.87%↓99%高碳锰铁（万吨）11.03-3.25%0.55%↑85%富锰渣（万吨）9.352.75%-↑85%电解锰（万吨）9.7914.76%-18.35%↑93%硅铁（万吨）42.600.35%-8.83%-95%工业硅（万