"Industrial vacuum cleaners" .... with small weaknesses

While I have not purchased the product through Amazon, but would like to share my experience so that other people to steer them away from error.
Plain and simple:
Raus waste of money.
Sending back was in my case no longer possible, because it was already working with the machine.
The suction hose is too small in diameter, sits down very quickly.
And the suction force of which I had promised me more definitely (after all, I had an "industrial vacuum" bought)
left more to be desired after not too long ago - even remain lying smallest stones.
After a half day in operation (not continuous operation!) I had the sucker disassemble to clean the filters (I always work with the dust bag), unfortunately with limited success in terms of suction power.
The unit smelled very strongly during operation after plastic fumes / odors, but this has waned after a few days.
I can issue a buy recommendation but rather advise to prefer to invest equal some extra money and to create something sensible here under any circumstances.
At the end you buy otherwise - as I did in this case - twice.
This device comes with me immediately to electrical ...

EDIT on 28.12.13

My father the unit has looked at once a few days ago.
He noticed the apparently missing a seal between the "suction cup" and the stainless steel container. We have, then temporarily sealing tape made a seal - and lo and behold: Nu sucks the thing really well. Although still remains the problem that the tube sometimes becomes clogged, but that happens only if the material is too coarse and more toward rubble goes.
Noticing remains positive whichever is easy to be drained and Reusable dust bag, which I had forgotten in my earlier review.
To give scrap I'm the sucker no more because he definitely met my requirements for the "repair" - it absorbs the construction dust, even the rough.
For the price that's all right.
My "scrap opinion" from above I would like to correct and hereby now forgive 3 stars because I now see the price / performance ratio very positive. Let's see what brings the passage of time :-).
Maybe someone can tell whether a seal for the stainless steel container exists?
I can not imagine that that has been lost to me me rather think that never was in there.
Possibly Does anyone have the same problem and knows a solution that is more durable than my "improvised poetry".

Many greetings