Two more Welsh components firms are to lay off workers in the wake of the crisis at MG Rover.
Krupp Camford Pressings in Llanelli is to let go 60 temporary staff. Unions said they expect 150 jobs to be lost.
Nearby firm Calsonic in Felinfoel is to lose 17. Last week, TRW Automotive, with plants in Resolven and Pontypool, said it would have to let 42 staff go.
Around 600 motor industry jobs in Wales are at risk after the collapse of talks between Rover and a Chinese motor firm.
Calsonic's Felinfoel plant has an annual turnover of £100m, with work for Rover accounting for £8m of that.
Dozens of Welsh firms which do business with Rover are to hold a further meeting on their options on Thursday.
On Wednesday, the families of MG Rover workers travelled to Downing Street to ask for further help from the UK Government.
Motor industry representatives met on Tuesday to assess what aid is available if MG Rover goes out of business.
They confirmed that Welsh suppliers will be eligible for the aid on offer from the UK government if they do more than 15% of their business with Rover.
If a firm does less than 15% with Rover, it could still benefit from aid in the form of business advice being offered by the Welsh Assembly Government.
Tim Williams, from the Welsh Automotive Forum, welcomed the money.
Emergency loan
"There are a number of companies out there I know who are looking at new contracts, so this will certainly give them a bit of extra support while that new contract kicks in," he said.
Andy Richards, from the Transport and General Workers Union in south Wales, said the possible closure of Rover could have serious effects for other Welsh firms.
"I think the impact on certain companies that are heavily involved with Rover, companies with 30-40% of their product going to Rover, are going to be severely affected," he said.
Many Welsh firms have said that they are in a better state to cope than they may have been just five years ago, according to BBC Wales Business and Industry Editor Gareth Jones.
He said previous scares have taught them not to depend on just one company and many have taken steps to secure a wider range of customers.