I remember coming across all kinds of tiny factories in what were very residential areas of Nagoya, back in the early 1980s. Fascinating. Thinking back, they were probably associated with the auto industry in some way
Yeah it's organized and efficient but seems way overkill for what is a really simple problem with a cheap solution....wipe it out and hang it somewhere, call it good.
But this is GJ where we dig this stuff it seems
Simple, they sell at list price or higher and the profits support that kind of crazy inventory. They are also located in extremely large cities by USA standards