Greetings @carlir. I agree with the point raised with you.
"they are like planting trees, each umbrella is equivalent to two trees planted and they are able to absorb the harmful particles emitted by vehicles." These initiatives will always be supported as they contribute to the conservation of the environment.
Thank you very much for sharing the publication
Greetings @dgalan, thank you for your comment, we can only wait for the cost and for it to expand to the rest of the countries.