It’s actually Flag Week (June 14-20, 2020).
“Patriotism is supporting your country all the time, and your government when it deserves it.” — Mark Twain
Since that’s on Alibaba, I suspect the customer base is the same as the Iranian American Flag factory.
I kinda doubt it, given that Alibaba is a Chinese multinational e-commerce company that sells literally millions of items all over the world, whereas the Iranian Diba Parcham flag factory mentioned by the OP appears to market exclusively to Iranian demonstrators.
There’s enough flag burning to justify a FACTORY? Damn!
Well, to be specific, the Iranian factory in question makes all sorts of flags for various ceremonial and religious displays. According to this article, they manufacture about 1.5 million flags a year, of which about 6000, or about 0.4% of their total output, are the US, UK, and Israeli flags that get burned at Iranian pro-government rallies.
Now this is a flag! 
WOW! Check this one out.
The best march not written by Sousa.
National Emblem March - Edwin Eugene Bagley (composer 1902), performed by the USAF Heritage of America Band
No music. Just ten hours of flag waving for your pleasure. 
Maybe you and the flag should get a room already?