Ferro Silicon Slag Ferro Silicon Slag Our History Anyang Fengfan Silicon Industry Co., Ltd., founded in 2010 on December 10, formerly anyang city yu macro metallurgy refractories co., LTD., founded in 1999 on June 12, has been more than 30 years of history. The founder Cai Yuhong, under the leadership of our company with the bear hardships and stand hard work, willing to study spirit and excellent product quality...