Rhodium is a very rare platinum group metal, the chemical symbol Rh, its appearance color is silver white. Rhodium metal has the characteristics of high melting point, strong hardness, excellent corrosion resistance and strong oxidation resistance. It is widely used in industry and is known as industrial vitamin.80% rhodium metal is used in the automotive industry, which is used in the three-way catalytic converter for automobile exhaust purification. So rhodium metal is mainly used in the automotive field. Secondly, the rhodium metal consumption in the chemical industry is about 8%. Other industries are at around 12%.