Nickel is calculated in tons and denominated in US dollars. Its daily limit on March 17 was $45,590/ton.

LME Nickel, also known as "London Nickel", is named after being listed and traded on the London Metal Exchange (LME). It belongs to international futures trading varieties and follows the trading rules of London Metal Exchange.

Nickel index refers to the nickel futures index traded on the London Metal Exchange, and LME nickel now refers to the spot nickel in London.

London Metal Exchange (LME) is the largest non-ferrous metal exchange in the world. The price and inventory of LME have an important influence on the global production and sales of non-ferrous metals.