Fresh leads have allowed police to construct an image of one of the men who drove over Kok On Chin, 33, as he was trying to deliver furniture in Peakhurst in Sydney's south on October 30, 2006.

Mr Chin and a co-worker were delivering a massage chair to a townhouse on Kerrie Crescent when the thieves saw his van parked in the driveway with the keys in the ignition.

Mr Chin heard the van's engine start and he ran down the driveway.

He put his arm inside an open window in an attempt to turn the engine off, then clung to the driver's side of the van in a desperate bid to stop the thieves.

But he fell as the van turned from Kerrie Crescent on to Henry Lawson Drive.

The van's rear tyres ran over him, and he died from his injuries.

The van was found abandoned less than one kilometre away in Riverwood.

At the time, police said Mr Chin's death appeared to have arisen from a crime of opportunity when the thieves saw the van parked in the driveway.

The thieves, thought to have been aged in their 20s, were likely to have been locals or to have had good local knowledge as the van was found abandoned such a short distance away, police said.

Mr Chin, also known as Marcus, had started work as a furniture delivery driver five months after moving to Australia from Malaysia.

His wife and five-year-old daughter were visiting him from Malaysia at the time. They had hoped to move permanently to Sydney when Mr Chin had established their home.

In 2008, a $100,000 reward was offered for information leading to the arrest and conviction of those responsible for Mr Chin's death.

In July this year, police renewed the reward. Mr Chin's uncle Michael Wong also appealed to the public for any information that would help to catch the killers.

Information received since allowed police to release a computer-generated image of one of the men on Thursday.

Anyone with information has been urged to contact Crime Stoppers on 1800 333 000 or visit the Crime Stoppers online reporting page.