Why a folding box, not a wing unit
There was nothing to see from this plot, so there was no reason to open a 6 m wall. A folding box has no side wings and the whole box comes down for transport, which makes it the tightest thing we ship. At 50 mm panels a 40HQ carries fourteen; the client took 75 mm and accepted ten so the winter would cost less to heat.
The day it went up
Level pad on the Saturday, delivery on the Monday. Panels unlocked, box opened out, corners locked, and the shell was weather-tight by mid-afternoon. Power came off a temporary pole the same day; water and drainage were connected the next morning. Nothing was welded and no crane came to site.
Where the money went instead
With no permit cycle to pay for, the budget went into the envelope: 75 mm panels rather than 50 mm, an insulated floor build-up, and a proper entry vestibule so the door does not open straight into the heated room. In a Moldovan winter those three items matter more than floor area.
What we would repeat
Put the installation manual on site, not in the office. This crew had never handled a folding box and lost about two hours on the first corner lock. With the sheet in hand a two-person team should close a box in under a day, utilities included.