Well there you go; anything will go to shit, if you wait long enough. So why bother with QC, eh? That seems to be a guiding precept in socialist countries. Perfect is the enemy of good enough.
However, you could argue in this case that the life expectancy of an armored vehicle might be measured in weeks; so you will probably blow up before the wiring fails. Problem solved, comrade.
In the mean time,
This would seem to be a big "aha" moment, for someone to crack open a device like this and reveal the shitty workmanship inside. Yet no one has commented on it. I find that curious.
I have read numerous threads about guys that buy cheap/used stuff from dubious sources, and about how it's just as good as the high-priced stuff. Yet here is a guy who shows you what's inside one of these bargain brand units, and nobody has anything to say?