Tata Steel board will discuss the plant's future in Mumbai today.
Thousands of steel workers future's are at stake in Wales after more than 1,000 jobs cuts in January across the Port Talbot and Trostre plants.
A board meeting is taking place today (Tuesday 29 March) following earlier talks between Roy Rickhuss, general secretary of Community, Aberavon MP Stephen Kinnock and Frits van Wieringen, chairman of the Tata Steel European works council.
They met in Mumbai with senior representatives of Tata Steel ahead of today's big meeting.
The union will be looking for a way to rescue the steel industry in Wales .
If talks are not successful in getting a turnaround plan in place, the future of the National giant will be in question.
A Community spokesman said the meeting was "open and constructive", with the European delegates making the case for Tata to continue to support the UK business.
"Tata Steel representatives outlined the context of commitment to the UK business to date, financial performance and the challenging global conditions of the steel sector," he added.
More than 35,000 people have signed an open letter to Tata Steel chairman, Cyrus Mistry, in support of the UK steelworkers
Steelworkers and companies have called for more action from the government to tackle cheap Chinese steel imports and high energy costs, which have been blamed for thousands of job cuts.