They can be cheaper than the wooden variety, burn more quickly thus causing less pollution, and are slowly gaining acceptance.
But funeral operators say there is still a long way to go before so-called eco-coffins made from recycled cardboard become the mainstream choice in the city.
Despite statistics showing a 16-fold increase in their use since they were introduced for government use in 2007, they still figure in just 2.2 per cent of cremations, and most have been used by the Food and Environmental Hygiene Department to dispose of unclaimed bodies.
The coffins were first made available to the public in March 2008.
Operators say they are still unpopular with the older generation.
Wan Lin-yuk of Fortune Services, which imports the coffins, said people still held the traditional Chinese belief that the dead deserved a 'respectful funeral'.