Iranian authorities said that the fire has not resulted in injuries or casualties.
"There are no casualties ... firefighters have been dispatched to the factory in the Islamshahr county. Efforts to control and extinguish the widespread fire continue," a fire department official told state TV, adding that the probe was launched into the cause of the fire.
Multiple videos showed the blaze engulfing the two-story facility as well as firefighter crews at the scene have been uploaded by the news organization on Twitter.
Another clip uploaded on Twitter by a user shows clouds of thick black smoke rising above the facility engulfed in the flames.