I know nothing about this factory, I did not visit...

I know nothing about this factory, I did not visit this factory and I do not even know that what do they work on and what do they form and how do they do it....
I visited Karkhanu Bazar back in 2014 and then was just looking at these factories specially this one and was thinking about the smoke and pollution these factories are creating......
Now when I visited again after 5 years, unfortunately the process of harming the environment was still in progress. . .
I won't say something bad about these factories but would say that we are so much backward that we didn't fix and also don't consider it as a problem -_-
I am posting a video too