Nizi International S.A. is a metals trading company headquartered in Capellen, Luxembourg.

It was founded by Nicolas Zimmer in 1898, making it one of the oldest companies in its field of activity in Europe.

Nizi International owns fellow metal trading and manufacturing companies such as Chemalloy and Miller in the US, Keyvest in Belgium and, since 2018, MPT in Sweden.

Nizi International mainly focuses on distribution into the metallurgical sectors like foundries and steelworks producers worldwide.

Nizi International complies the ISO 9001:2000 standard, and it is certificated by the entity TüV.