Spanish train manufacturer, Construcciones y Auxiliar de Ferrocarriles (CAF), is set to open its £30m centre where Llanwern Steelworks once stood in autumn 2018.
The company has said that 300 "highly-skilled and well paid" engineering jobs will be created once it opens its production factory in Newport.
Officials claim the the Welsh Government offered a £3m grant to secure the jobs.
This significant investment from CAF and Welsh Government will underpin the development of the rail sector in Wales and places us at the heart of an industry with massive growth potential. As well as creating 300 high calibre jobs, it also coincides with our major Welsh Government Metro rail investment in south east Wales, details of which will be unveiled over the coming weeks." Ken Skates, AM Economy Secretary said in a statement.
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