Firstly, I've visited ISRO Bangalore(A few years back). And I did see the exact things you mentioned. I did ask the guy(Not sure, if he was the PR guy) who took

Firstly, I've visited ISRO Bangalore(A few years back). And I did see the exact things you mentioned. I did ask the guy(Not sure, if he was the PR guy) who took our class for the tour. His answer was, they were likely assembling some test equipment and not the real equipment that was going to space.