The fire has been burning since 1 a.m. near Poly America in the 2000 block of West Marshall Drive.
People on social media said they can see the flames for miles and reported huge plumes of smoke.
The Grand Prairie Fire Department said in an update on Twitter that there are no reports of injuries.
Firefighters are putting water on the flames, but the chief says this fire has gone defensive, meaning they're just going to let it burn itself out.
Local media is reporting the fire could even burn until Thursday.
A woman who lives nearby described what she first heard before seeing the giant flames.
"It sounded like tires screeching, and then a big explosion, and then I came out here to see all this," said Allyssa Guerra.
Still, people with underlying conditions should avoid the area. No evacuations have been issued.
Crews are on defensive mode working to contain the fire that started due to high-tension power lines falling into the plastic inventory. No reports of injuries. Persons with underlying conditions should avoid the area. No official evacuations. Hwy 161 PGBT is shut down. https://t.co/7riYpRLu2r— Grand Prairie Fire (@GPTXFire) August 19, 2020
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