A £500,000 deal secured by a Birmingham software firm was among millions of pounds worth of deals sealed by UK firms in China.
Delcam, from Birmingham, is signing a Memorandum of Understanding with First Auto Works worth £500,000 over 10 years.
The contract was unveiled before David Cameron set off for his first trip to China as Prime Minister.
Manufacturer Oleo, based near Coventry, also secured a £35,000 agreement to provide products for Guangzhou Metro.
Mr Cameron said regards his visit, on which he is accompanied by dozens of chief executives and chairmen of major UK companies, as a “vitally important trade mission”.
Business Secretary Vince Cable has flown to Beijing ahead of the PM to begin three days of intensive trade talks, with the aim of “cementing a partnership for growth” between the UK and the world’s second-largest economy.
Speaking ahead of the trade talks, Mr Cable said: “These talks take the relationship between the UK and China to a new level. I warmly congratulate those companies which have announced deals today.
“China is a huge opportunity for UK businesses and I would urge more companies to follow in their footsteps. China is our ninth largest export market, but it is the world’s second largest economy and the potential for expanding our partnership is huge.”