This is a GGBFS production line with annual output of 300,000 tons from
Xinxiang Ruifeng Cement Co. Ltd. This production line uses GRMS33.31 slag
vertical mill that produced by Great Wall Machinery. The annual profit is more
than $ 7,500,000 by selling GGBFS. Metal that recycled from slag can bring an
income of $ 150,000 every year.