Henan Keer Metallurgy Material Co.,Ltd is a diversified development enterprise integrating scientific research, production and operation. The company is specialized in the production and research of refining slag. Refining slag.electric melting pre-melting multi-functional refining slag, synthetic refining slag, high magnesium refining slag, high aluminium refining slag, high calcium refining slag, calcium aluminate powder, which are mainly used as various additives in the refining part of iron and steel plant and steelmaking process.