Where can I identify meteorites for trading?

Shanghai Yongning meteorite trading center. Meteorites are usually divided into four categories according to the content of iron and nickel: stone meteorites, iron meteorites, stone iron meteorites and glass meteorites. The content of iron and nickel metals in meteorites is less than or equal to 30%; The content of iron and nickel metals in stone iron meteorites is between 30% and 65%. The content of iron and nickel metals in iron meteorites is greater than or equal to 95%. Glass meteorites do not contain metal components.