Around 100 new jobs are set to be created in Wales through a joint venture between Llangennech-based company Hydro Industries and US company T&T Salvage.
The deal was sealed during a four-day trade mission in San Francisco, where First Minister Carwyn Jones is leading a delegation of 18 Welsh businesses.
Hydro Industries specialises in the design, manufacture and operation of electro-based water treatment products. The deal will see unique products that have been developed and patented in Wales deployed across the United States market.
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Medication designed for animals was taken from the building in Abertillery on Thursday night.
More than a thousand riders will be taking part in a series of events in and around the town.
Some warm spells of sunshine will develop, although scattered heavy and thundery showers are also expected during the afternoon.