Landmark builders I know them personally as I have experienced their service of their building construction in the means of building a mosque in a high range area. it was the construction of a three floor mosque which they completed within the said time.
I realised that they have a pool of employees and employers for helping in their smooth running of their construction business.during those days I never find any excuses which are being proceeded from their side. there was also no miss placements for any corrections to be done after the construction it was just fine as anything.