Hello, people
Newbie on here

On the subject: the choice is between the Llumar and 3M. But looking on the climate specific of India, I do not think 3M is an appropiate choice. 3M is fitted more for the moderate continental area, is not quite sun resisting as the sommercial says.
And, be carefull: workmanship in this case is the difference between heaven and hell (and everything on yor money!). Try a certificate service, ask for guarantee, supervise personally. And do not go cheap. In the end, if anything goes wrong, it will be more expensive.
My best regards.