Sports fans were shocked after realizing the use of flamethrowers to restore stadium seats.

Whether you are a football fan, baseball fan or basketball fan, one thing that unites all sports fans is to sit on hard plastic seats and watch their favorite athletes.

Cleaning up after the game is a well-known fact. Thousands of fans will produce a lot of garbage when eating and drinking in the stands, but the seats themselves need to be maintained.

Instead of scrubbing each seat individually, it is better to use fire to restore the seats to their former glory.

A video was widely shared on Reddit showing an incredible process called flame polishing.

Users ChoppyIllusion and CoppellCitizen shared this 41-second clip with no sound. The title of the former is: "How are stadium seats restored."

It shows a row of red chairs, in an unknown location, the one on the right is a bright, vibrant shadow, and the one on the left is a chalky pale color.

The people who wield what might become weapons seem to be photographing this incredible spectacle as they spray flames onto the dilapidated-looking chairs.

It did not burn or melt, but began to change color, and the bright red hue slowly became visible.

They go around the edge before filling the back side until it matches the already completed row.

People admitted that they didn't know the seats were so "clean" because more than 2,000 people commented in the video.

"3 hits, only 36997 left!" Nostradambes joked.

Swervin87 wrote: "Are these seats made of asbestos? I know it is completely fireproof, and burning it will only make it clean."

Key-Table2369 admits: "No, I feel like an idiot, I thought it was frost, they just melted it."

Stifflizerd added: "I think this is some kind of protective finish that needs to be melted, so I think we are in the same boat."

Hl3_for_Eli said: "My mentor P***** didn't let me know that there is such a job. Now I am stuck in stupid spreadsheets and Word forms, and I could have used the damn flamethrower."

Some people explained the process more. Ch1ldofSatan wrote: "The original color is red. When wear occurs, it will leave small scratches that blur the surface and make it look pale. When the scratches melt, there will be no more turbidity and discoloration."

Although West_of_Ishigaki pointed out: "In addition to scratches, plastic resin is also oxidized by ultraviolet radiation (these seats may be exposed to a lot of sunlight!). The red pigment is really difficult to protect, and it will become Turbidity (painted red cars may also have the same problem. This torch is melting the oxidized top layer, allowing fresh red plastic to flow across the surface."

The Aquaflame Systems website describes in more detail the widespread application of flame polishing in many industries.

They said: “Aquaflames are used in a variety of acrylic flame polishing applications, including acrylic sign making, acrylic model making, acrylic point-of-sale display and many other acrylic applications. The increased strength and safety of plexiglass acrylic means it can be widely used in various A variety of commercial industries and professions, including: banks, stadiums, restaurants and catering, flooring, aquariums, music venues, movies and televisions, trade fair booths, theaters, protective glass for sound barriers."

Newsweek contacted ChoppyIllusion and CoppellCitizen who shared the video clips for comments.

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