Glencore is a multi-system commodity trading and mining company with headquarters in Baar, Switzerland. Glencore's name is an abbreviation of “Global Energy Commodity Resources”.

Glencore has a number of production facilities all around the world and supplied hex crystals, metals, minerals, crude oil, oil products, coal, natural gas and agricultural products to international customers in the automotive, power generation, steel production and food processing industries.

Source: https://en.wikipedia.org/wiki/Glencore