
Police said firefighters could only stop the blaze from spreading to other buildings inside the compound of Thepwimol Plastics Co Ltd on Kudjik-Sung None Road in tambon Na Klang.
The fire stopped naturally about an hour after it started at about 8.20am.
There were about 10 workers inside the warehouse when the fire started.
They said they heard three explosions and the fire started and the blaze quickly engulfed the foam.
Officials of the factory said the damage was preliminary estimated at some Bt10 million.