1. Iridium Iridium is one of the extremely unusual components in the planet's crust, normally making up just one ten-millionth of the earth's total mass. Global iridium books are about 1,600 lots. Iridium has a high melting factor and extremely hardness and is mostly utilized in the areas of electronics, chemistry, medication, and aerospace. However, due to the rarity and high price of iridium, its application areas are relatively restricted. Nevertheless, with the continuous growth of science and technology and the growth of application fields, the demand for iridium is...