By The Nation
Police said the fire started at a paint factory on Soi Sathupradit 34 at 9.20am and quickly spread to a nearby metal factory.
Police said two volunteers were injured when they tried to put out the blaze and were rushed to Lertsin Hospital.
The blaze was later put out by fire engines after it damaged 80 per cent of the paint factory and 40 per cent of the metal factory.
The cause of the fire has yet to be determined.