Due to the stricter emission standards issued by the government, automobile manufacturers have used a lot of palladium in recent years, accounting for 85% of the total demand for palladium. Palladium is used in catalytic converters to reduce emissions, so that cars produced by automobile factories meet emission standards. As major economies are still under blockade, automakers no longer produce cars, and falling demand still puts pressure on this industrial metal.

：

1. palladium is one of the rarest precious metals in the world, and the element symbol Pd is one of the platinum group elements. Palladium has high purity, similar appearance to platinum, silvery white metallic luster in natural state and never fades. Palladium has high temperature resistance, corrosion resistance, wear resistance and ductility. In terms of purity, rarity and durability, platinum can be used instead, which is an ideal material for making jewelry and inlaid gems. Palladium, together with platinum, gold and silver, is one of the international precious metal spot and futures trading varieties, which was once higher than platinum in history.

2. In addition, palladium is a widely used catalyst, from petrochemical industry to medical treatment, from automobiles to watches.

3. Palladium has a natural pure white luster like platinum, and its color is bright. It also looks like platinum, but compared with platinum, the price of palladium is lower. Because palladium has some unique physical and chemical characteristics, it is more difficult to process jewelry than platinum, and the requirements for all links are very high.

4. Palladium is often associated with platinum, and its output is less than platinum. In mineral classification, platinum group elements belong to natural platinum subgroup, including natural element minerals such as iridium, rhodium, palladium and platinum. There is a wide range of isomorphic substitution between them, thus forming a series of isomorphic mixed crystals. These elements have great similarities in physical and chemical properties. Especially palladium and platinum, two precious metals, are very much like brothers. The metallurgical properties of these two metals are very similar, because they are also rare and have similar uses, and they often replace each other in various applications.

The National Jewelry Standardization Technical Committee stipulates that precious metal jewelry can only be named with one element. Therefore, palladium jewelry cannot be called "palladium platinum jewelry" or "palladium platinum jewelry" and so on. It can be seen that the national standards have very clear and strict regulations on the naming and expression of different precious metals.